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AhlsellProductsElectricInstallation equipment 11-1817 17 Property automation / IoTShellySensors & Remote Controls

Sensors & Remote Controls

Smoke detector
Remote controls
Door sensors
Motion sensors
Sensors
Leak alarm

Ahlsell helps you find the installation material for all your electrical jobs. Whether you work with commercial properties or private residences, we have the range for your next project. Here you will find wall sockets, cable ladders, and accessories for easy installation. We also offer smart wall sockets, switches, and dimmers from several major suppliers. Modern products for modern solutions. Everything you need under one roof. Explore our wide range of lighting and accessories here in the online store or visit your nearest Ahlsell shop.

Products (17)
Input module WiFi i4 Gen3
Shelly
Input module WiFi i4 Gen3
Art. no.: 1302006
Shelly I4 and I4 DC Gen3 are input modules that enable customers to make common switches, push buttons, motion sensors and similar devices smart. Shelly I4 Gen3 has four inputs with four functions per input (1, 2 and 3 short presses and long presses) and enables manual sending of wireless commands to activate or deactivate scenes, send webhooks or perform complex scenarios.The devices can control other Shelly relays, dimmers, sensors or HTTP and MQTT controlled devices.

The Shelly I4 Gen3 is easily configured and controlled via the Shelly Smart Control app or your preferred smart home system. Shelly devices work 100% locally and only require a local network to operate. Shelly can be used alone in the Shelly Smart Control app or with over 200 partner systems such as Amazon Alexa, Home Assistant, Samsung SmartThings, Athom Homey and many more.

•Shelly I4 and I4 DC Gen3 have many uses. The Shelly I4 Gen3 can be powered by 110-230 VAC and the Shelly I4 DC Gen3 can be powered by 5-24 VDC.

For example, Shelly I4 can be used for:
•To make ordinary switches smart
•To make motion sensors smart
•To make smoke detectors with relay output smart
•Shelly I4 DC can be used for low voltage installations and for example converting an old IHC installation to Shelly.

All Shelly WiFi devices have a built-in web server, which means you get a wealth of features that always work. The built-in web server means that Shelly has built-in memory and therefore remembers sunrise, sunset, schedules and more, even when the network goes down. Relays and dimmers work like normal rocker relays and can therefore be used with your usual switches - even without internet. All inputs and outputs are fully programmable and only require local wifi to communicate between devices. However, we recommend having an active internet connection as it opens up even more features.
Smoke detector WiFi Plus Smoke
Shelly
Smoke detector WiFi Plus Smoke
Art. no.: 6304276
Shelly Plus Smoke Alarm is an intelligent and wirelessly connected photoelectric (optical) battery-operated smoke detector that effectively detects and warns of smoke development before the smoke gets hot and the fire has time to develop.

Shellys Plus Smoke can be easily set up and controlled through the Shelly Smart Control app or your preferred smart home system. Shelly devices work 100% locally and only need a local network to work. Shelly can be used alone in the Shelly Smart Control app or with more than 200 partner systems such as Google Home, Amazon Alexa, Home Assistant, Samsung SmartThings, Athom Homey and many more.

Function
The Shelly Plus Smoke Alarm can be easily installed in any home or business. A CR123A battery as power supply is included, which maintains power for more than three years. Using optical technology, the smoke detector is designed to "see" the smoke before it heats up and bursts into flames. This way, you can get a lightning-fast warning through the Shelly Cloud app when smoke occurs, and at the same time, Plus Smoke will also emit a >85 dB light and sound alarm. When the battery level is low, Shelly Plus Smoke will notify you through the Shelly Smart Control app.

Connection
The Shelly Plus Smoke Alarm can be connected to the Internet or the local network on 2.4 GHz WiFi. In addition, the device has built-in Bluetooth, like the rest of the Pro and Plus devices. The device works locally without connection to Shelly Cloud and can also communicate via MQTT, HTTP and WebSocket.

Hardware
The device is equipped with hardware from generation 2, which, among other things, consists of a powerful ESP32 processor. This enables the use of scripting functions for advanced and custom functionality with the device.

Links
Technical documentation: https://kb.shelly.cloud/knowledge-base/shelly-plus-smoke
General information: https://www.shelly.cloud/en-dk/products/product-overview/shelly-plus-smoke
Push button Shelly BLU 4 stand alone
Shelly
Push button Shelly BLU 4 stand alone
Art. no.: 1893158
The Shelly BLU Wall Switch 4 is a battery-powered Bluetooth button with four buttons that installs on the wall. The control button can be configured to control your lights, curtains, garage door, your lighting scenes or anything else. A CR2032 battery with an expected life of more than 5 years included.

The Shelly BLU Wall Switch 4 uses Bluetooth technology, which provides lightning-fast reaction time. To connect Shelly Bluetooth sensors and buttons to the network, the device needs a gateway. For this purpose, the battery unit can use any of the Shelly Pro, Shelly Plus or Shelly Gen3 units, or the dedicated Shelly BLU USB Gateway. This means that when you have another Shelly device installed on your WiFi, it will be able to act as an access point for Shelly Bluetooth devices to the network.

Shelly BLU Button 4 can perform up to four actions or scenes per button: single, double, triple and long press.

Functions

Script functionality provides endless possibilities.
Full compatibility with Home Assistant, Homey and all other devices supported by the BTHome protocol.
Uses BLE technology.
Can turn appliances on/off, dim and activate scenes.
Encrypted wireless signals.
Range of 10m indoors and 30m outdoors.
Works with Pro, Plus and Gen3 devices.
Important: There are several variations of this battery button. This model comes with a frame and back plate included, so it is ready to install on the wall.

The control button is also available in a frameless model, so you can purchase an adapter yourself that allows installation in different EU system standards. If you want this solution, you should use one of the following models:

Shelly BLU Wall Switch 4 - without frame: 3800235266892
Shelly Wall Switch Adapter - Gira/Merten/Exxact: 3800235266922
Shelly Wall Switch Adapter - Legrand/Shelly: 3800235266953
Shelly Wall Switch Adapter - Busch-Jaeger: 3800235266946
Push button Shelly BLU 4
Shelly
Push button Shelly BLU 4
Art. no.: 1893163
The Shelly BLU Wall Switch 4 is a battery-powered Bluetooth button with four buttons that installs on the wall. The control button can be configured to control your lights, curtains, garage door, your lighting scenes or anything else. A CR2032 battery with an expected life of more than 5 years included.

The Shelly BLU Wall Switch 4 uses Bluetooth technology, which provides lightning-fast reaction time. To connect Shelly Bluetooth sensors and buttons to the network, the device needs a gateway. For this purpose, the battery unit can use any of the Shelly Pro, Shelly Plus or Shelly Gen3 units, or the dedicated Shelly BLU USB Gateway. This means that when you have another Shelly device installed on your WiFi, it will be able to act as an access point for Shelly Bluetooth devices to the network.

Shelly BLU Button 4 can perform up to four actions or scenes per button: single, double, triple and long press.

Functions

Script functionality provides endless possibilities.
Full compatibility with Home Assistant, Homey and all other devices supported by the BTHome protocol.
Uses BLE technology.
Can turn appliances on/off, dim and activate scenes.
Encrypted wireless signals.
Range of 10m indoors and 30m outdoors.
Works with Pro, Plus and Gen3 devices.
Important: There are several variations of this battery button. This model is delivered WITHOUT an adapter. This means that you need to purchase an adapter for it to be installed in selected system standards.

Shelly Wall Switch Adapter - Gira/Merten/Exxact: 3800235266922
Shelly Wall Switch Adapter - Legrand/Shelly: 3800235266953
Shelly Wall Switch Adapter - Busch-Jaeger: 3800235266946
Please note that for the adapter to fit the SE Exxact, you need to use the Exxact Combi Frame (WDE002801).

If you want to install the control button on a wall without a back box, you can buy the device in a free-standing version:

Shelly BLU Wall switch 4 – stand alone: ​​3800235269626
Door/window sensor Shelly Bluetooth
Shelly
Door/window sensor Shelly Bluetooth
Art. no.: 6310732
Shelly BLU Door/Window is a very compact door/window sensor. With Bluetooth technology, the sensor reacts lightning fast when a door or window is opened or closed. In addition to the open/close function, the BLU Door/Window also has a built-in lux meter and tilt sensor , so it can be used with slanted windows or similar.

The sensor works in combination with any Shelly Plus or Pro device, which it uses as a 'gateway' to the internet. Installation is simple and takes only a few minutes. The Shelly BLU Door/Window is powered by a CR2032 battery (included).

•Script functionality provides endless possibilities.
•Full compatibility with Home Assistant and other devices supported by the BTHome protocol.
•Uses BLE technology.
•Can turn on/off devices, dim and activate scenes.
•Encrypted wireless signals.
•Range of 10m indoors and 30m outdoors.
•Works with Plus and Pro devices.

Links
Technical documentation: https://kb.shelly.cloud/knowledge-base/shellyblu-door-window
General information: https://www.shelly.com/en-dk/products/product-overview/shelly-blu-door-window
Door/window sensor Shelly Bluetooth
Motion sensor Shelly BLU Motion
Shelly
Motion sensor Shelly BLU Motion
Art. no.: 1302021
Shelly BLU Motion is a small smart Bluetooth motion sensor with a built-in lux meter to measure daylight. The device is delivered ready to use with a CR2477 battery with a 5-year life. Shelly BLU Motion detects motion in less than 100 ms. The sensor's sensitivity can can be adjusted at different levels, which allows for precise adjustment of the detection.

Use Shelly BLU Motion in your automations to save energy and to secure your home by using the motion sensor as part of your alarm system.

The Shelly BLU Motion can use the Shelly BLU Gateway as well as all 230V connected Shelly Plus and Pro devices as a gateway to the internet.

The device is fully compatible with Home Assistant and other devices supported by the BTHome protocol.

Links
Technical documentation: https://kb.shelly.cloud/knowledge-base/shellyblu-motion
General information: https://www.shelly.com/en-dk/products/product-overview/shelly-blu-motion
New in the online store
Water valve Smart WiFi
Shelly
Water valve Smart WiFi
Art. no.: 0985083
Neo Smart Water Valve is a smart 25 mm (1") water valve with integrated consumption measurement, developed for precise control and high operational reliability. The valve can be used for water saving, monitoring or as a safety solution to avoid water damage.

Device features:
- Measures flow, water pressure and water temperature
- Ultrasonic flow measurement: ±10% accuracy, without contact with water and without moving parts
- Power supply: 5 VDC / 2A via USB-A
- Stepless control 0-100% (opening/closing time: 12 sec.)
- Drinking water approved (NSF)
- Max. pressure: 13 bar / Max. temperature: 65 °C
- IPX7 rated - resistant to harsh environments

Material: Copper
- Key features
- WiFi connection: 2.4 GHz - no gateway required
- Bluetooth integration: Direct communication with Shelly BLU devices
- Local control: All primary functions work 100% locally, even in the event of a network outage
- High compatibility: Integrates with over 200 systems, including Google Home, Amazon Alexa, Home Assistant, Samsung SmartThings and Athom Homey
- Advanced protocols: Support for MQTT, HTTP and WebSocket – all with TLS encryption

Powered by Shelly:
The Neo Smart Water Valve is built on the built-in Shelly X chip, which provides full integration with Shelly Smart Control and broad compatibility with third-party platforms. The products are developed in close cooperation with Shelly, therefore delivering maximum functionality and reliability.

Local operation – without a gateway:
All Shelly WiFi devices have a built-in web server, which allows functions such as scheduling, astro function (sunrise/sunset) and scenarios to work completely locally.
Neo Smart Water Valve – a powerful and secure solution for smart water control and water damage protection.
Battery-powered button, Bluetooth and Zigbee
Shelly
Battery-powered button, Bluetooth and Zigbee
Art. no.: 1893456
Shelly BLU Button Tough 1 ZB is a compact, battery-powered remote button for quick control of smart devices. It can be attached to a key ring or placed around the home – for example on the dining table, bedside table or in the children's room – so that a shortcut button is always close at hand. With one press, you can control lighting, open the garage door or activate locking and security functions.

The device uses Bluetooth for instant response and has built-in Zigbee for integration into third-party Zigbee platforms. BLU Button Tough 1 ZB is IP54 rated and suitable for both indoor and outdoor use.

The button supports four actions per button: single press, double press, triple press and long press.

Features
• Control of relays, dimmers, scenes and automations
• Compatible with Home Assistant and other BTHome platforms
• BLE technology with encrypted communication
• Adjustable click sound indication
• “Find me" function via beacon mode
• Range up to 30 meters

Shelly BLU devices require a gateway for network access. All Shelly Pro, Gen3 and Gen4 devices as well as the Shelly BLU USB Gateway can be used. If you already have a Shelly device on your WiFi, it will automatically act as a gateway for BLU devices.

The Shelly BLU Button Tough 1 ZB can be configured via Shelly Smart Control and integrates with over 200 smart home ecosystems, including Google Home, Amazon Alexa, Home Assistant, Samsung SmartThings and Athom Homey.
Battery-powered button, Bluetooth and Zigbee
Distance meter Smart, Bluetooth
Shelly
Distance meter Smart, Bluetooth
Art. no.: 4203785
Shelly BLU Distance is a precise ultrasonic sensor that measures distances from 200 to 5000 mm. It is battery-powered with up to 4 years of battery life, making it ideal for long-term and maintenance-free operation. With its robust IP64 protection, it is perfect for measuring water levels in tanks, monitoring salt levels in water softening plants or controlling parking lots and other demanding environments. The sensor automatically sends measurements every 30 seconds (adjustable between 5-300 seconds) or when vibrations are detected.

Installation is easy in the Shelly Smart Control app or via one of the more than 200 supported smart home systems, including Google Home, Amazon Alexa, Home Assistant, SmartThings and Athom Homey. All Shelly devices work 100% locally without the need for a cloud. A gateway is required to connect the Shelly BLU Distance – all Shelly Pro devices as well as Gen2 or later can act as gateways for BLU devices.
Door/window sensor Shelly Bluetooth and Zigbee
Shelly
Door/window sensor Shelly Bluetooth and Zigbee
Art. no.: 6310879
Shelly BLU Door/Window ZB is a very compact door/window sensor with a long battery life and fast response when a door or window is opened or closed. In addition to the open/close function, the sensor has a built-in lux meter and tilt sensor, making it ideal for, for example, tilt and roof windows. The device uses Bluetooth for fast response and has built-in Zigbee for integration with third-party Zigbee platforms.

Shelly BLU devices require a gateway for network access. All Shelly Pro, Gen3 and Gen4 devices as well as the Shelly BLU USB Gateway can be used. If you already have a Shelly device on your WiFi, it automatically acts as a gateway for BLU devices.

Features
• Compatible with Home Assistant, Homey and other systems that support BTHome
• BLE technology for fast response
• Encrypted wireless communication
• Range: approx. 10 m indoors / 30 m outdoors
• Works together with Shelly BLU TRV
Door/window sensor Shelly Bluetooth and Zigbee
Remote control 4 channels, BLU RC Button 4 ZB
Shelly
Remote control 4 channels, BLU RC Button 4 ZB
Art. no.: 1893465
Shelly BLU RC Button 4 ZB is a compact four-button remote control that can be configured to control lighting, curtains, garage doors, scenes and other smart functions. It comes with a wall mount that is easily mounted with screws. The remote control has a magnetic back and can be placed in the mount or loosely on, for example, a coffee table or bedside table. The device uses Bluetooth for fast response and has built-in Zigbee for integration into third-party Zigbee platforms.

Shelly BLU devices require a gateway for network access. Shelly Pro, Gen3 and Gen4 devices as well as the Shelly BLU USB Gateway can be used. If you already have a Shelly device in your WiFi, it automatically acts as a gateway for BLU devices. The Shelly BLU RC Button 4 ZB supports up to four actions per button: single press, double press, triple press and long press.

Features
• Compatible with Home Assistant and other BTHome platforms
• BLE technology with instant response
• Encrypted wireless communication
• Range up to 30 meters
Remote control 4 channels, BLU Remote Control ZB
Shelly
Remote control 4 channels, BLU Remote Control ZB
Art. no.: 1893445
Shelly BLU Remote Control ZB – Elegant remote control with 4 channels, Bluetooth & Zigbee. The Shelly BLU Remote Control ZB is a stylish 4-channel remote control that gives you easy and flexible control of Shelly devices, groups and scenes. It is available in both black and white and comes with a practical wall bracket that can be mounted with either adhesive or screws.

With the four channels, you can decide what to control yourself – from individual relays and dimmers to entire groups of devices. You can easily switch between the channels via the two arrow keys and configure the functions in the Shelly Smart Control app or through local pairing. The remote control also has a precise knob, which makes it possible to steplessly regulate the brightness or control blinds and awnings up and down. With the built-in gesture control, you can also control devices with simple hand movements.

Communication and integration:

- Bluetooth: Use any Shelly device from Generation 2 or later as a gateway via the Shelly app.

- Zigbee: Direct integration into third-party platforms that support Zigbee.
- Local pairing: Works completely without WiFi or an app - connect it directly to a relay or dimmer for fast and reliable control.

Shelly BLU Remote Control ZB is easily configured via the Shelly Smart Control app or integrates with more than 200 smart home platforms, including Google Home, Amazon Alexa, Home Assistant and Athom Homey. Shelly BLU Remote Control ZB combines flexibility, stylish design and wide compatibility - for smooth control of your smart home.
Remote control 4 channels, BLU Remote Control ZB
Switch BLU Wall Switch 4 ZB, surface-mounted
Shelly
Switch BLU Wall Switch 4 ZB, surface-mounted
Art. no.: 1893482
The Shelly BLU Wall Switch 4 ZB is a battery-powered Bluetooth and Zigbee wall switch with four buttons. It can be configured to control lighting, curtains, garage doors, scenes and other smart functions. A CR2032 battery is included and has a lifespan of over 5 years.

Each button supports up to four actions: single press, double press, triple press and long press. The switch can be paired directly and locally with Shelly relays, dimmers and blinds controls - completely without an app. For advanced automation, it can be connected to the Shelly Smart Control. The Shelly BLU Wall Switch 4 ZB uses Bluetooth for fast response and has built-in Zigbee for integration into third-party Zigbee platforms. Shelly BLU devices require a gateway for network access. All Shelly Pro, Gen3 and Gen4 devices as well as the Shelly BLU USB Gateway act as a gateway. If you already have a Shelly device in your WiFi, it automatically acts as a gateway for BLU devices.

Features
• Compatible with Home Assistant, Homey and other systems supporting BTHome
• BLE technology for fast response
• Control of relays, dimmers and scenes
• Works standalone without WiFi
• Encrypted wireless communication
• Range: approx. 10 m indoors / 30 m outdoors

Important - variants
This model is supplied with frame and back cover, ready for direct wall mounting.

If you want to mount it with an adapter in different EU system standards, select the variant without frame and supplement with the correct adapter:

Model without frame
• 3800238072551 - Shelly BLU Wall Switch 4 ZB (without frame)

Adapter options
• 3800235266922 - Adapter: Gira / Merten / Exxact
• 3800235266953 - Adapter: Legrand
• 3800235266946 - Adapter: Busch-Jaeger
Switch BLU Wall Switch 4 ZB, without adapter frame
Shelly
Switch BLU Wall Switch 4 ZB, without adapter frame
Art. no.: 1893466
The Shelly BLU Wall Switch 4 ZB is a battery-powered wall-mounted Bluetooth and Zigbee switch with four buttons. It can be configured to control lighting, curtains, garage doors, scenes and other smart functions. A CR2032 battery is included and has a lifespan of over 5 years.

Each button supports up to four actions: single press, double press, triple press and long press. The device can be paired locally with Shelly relays, dimmers and blinds controls - completely without an app. For advanced automation control, it can be connected to the Shelly Smart Control. The Shelly BLU Wall Switch 4 ZB uses Bluetooth for fast response and has built-in Zigbee, which allows integration into third-party Zigbee platforms. Shelly BLU devices require a gateway for network access. All Shelly Pro, Gen3 and Gen4 devices as well as the Shelly BLU USB Gateway can be used. If you already have a Shelly device in your WiFi, it automatically acts as a gateway for BLU devices.

Features
• Compatible with Home Assistant, Homey and others systems that support BTHome
• BLE technology for fast response
• Control of relays, dimmers and scenes
• Works standalone without WiFi
• Encrypted wireless communication
• Range: approx. 10 m indoors / 30 m outdoors

Important - adapters
This model is supplied without an adapter. For installation in various switch systems, a suitable adapter is required:

• 3800235266922 - Gira / Merten / Exxact / Elko
• 3800235266953 - Legrand / Shelly
• 3800235266946 - Busch-Jaeger / Jussi

Please note: When installing in SE Exxact, the Exxact Combi Frame (WDE002801) is required.

For wall mounting without a device box, the stand-alone version is available:
• 3800238073053 - Shelly BLU Wall Switch 4 ZB, stand-alone
Leakage sensor Flood Gen4 WiFi/Zigbee
Shelly
Leakage sensor Flood Gen4 WiFi/Zigbee
Art. no.: 9450036
Shelly Flood Gen4 – Smart water and leak sensor. Shelly Flood Gen4 detects even the smallest leaks before they develop into costly damage. You get instant notifications directly on your mobile and full integration into your smart home. Perfect for basements, kitchens, laundry rooms, garages and holiday homes. Unlike traditional sensors with metal legs, Shelly Flood Gen4 uses a 2 meter long sensing cable where the entire cable registers water. The cable can be extended up to 150 meters and cover large areas – for example, the entire basement or all kitchen cabinets.

With its multi-protocol chip, Shelly Flood Gen4 works via WiFi and Zigbee and is also Matter compatible. It can be configured in the Shelly Smart Control app or integrated into over 200 systems, including Google Home, Apple HomeKit, Amazon Alexa, Homey, Home Assistant, SmartThings and KNX.

Note: Zigbee is only supported via third-party platforms. WiFi is required for the Shelly Smart Control app.

Features
- Two modes: Flood detection & Rain detection
- Three alarm levels: Intense, Normal, Economic
- Battery powered (4×AA included)
- IP44 rated for protection against moisture and splash water
- Smart automation: For example, turn off the water automatically via a smart valve

Shelly Flood Gen4 reacts the moment a leak occurs – so you can act quickly and protect your home.
Presence and motion sensor, Gen4 WiFi/Zigbee
Shelly
Presence and motion sensor, Gen4 WiFi/Zigbee
Art. no.: 1302254
Shelly Presence Gen4 – Smart presence and motion sensor. Take full control of your room with Shelly Presence Gen4, which uses advanced radar technology. It detects even the smallest movements – even when people are sitting still or lying down – and thus provides much more accurate detection than traditional motion sensors.

The sensor can detect up to 6 people at the same time and allows you to create 10 individual zones. This opens up customized automations, such as:
- Automatically turn on the lights when you enter an area
- Activate “TV mode" when you sit down on the sofa
- Get a notification when the child leaves the bed
- Optimize the use of meeting rooms by knowing exactly how many people are present

With a range of 42 m² and a detection angle of 140° (7×6 meters), it is suitable for both private homes and professional environments. It detects still presence up to 3 meters and can be adjusted so that small movements from pets or robot vacuum cleaners ignored.

Shelly Presence Gen4 is equipped with WiFi, Zigbee and Bluetooth and is fully Matter compatible. It can be integrated into the Shelly Smart Control app or into over 200 smart home platforms, including Google Home, Apple HomeKit, Amazon Alexa, Homey, SmartThings, KNX and Home Assistant.

Features:
- Radar-based precise presence detection
- Multi-person tracking: up to 6 people
- Zone-based detection: up to 10 zones
- Built-in light sensor (dark, dusk, light)
- Adjustable sensitivity - avoid false alarms
- Compact design in black or white
- Flexible placement: wall, shelf, table or wardrobe
- Power supply via USB-C (5V DC/1A)

Shelly Presence Gen4 takes presence detection to the next level - for smarter and more reliable automations.
Presence and motion sensor, Gen4 WiFi/Zigbee
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