This is only the button. in order to use it you will need also the AJAX Automation Wall LightSwitch(2 Gang) code : 24155
The first and second button of the touch-sensitive panel
2–gang : control two lighting lines (two lamps)

LifeQuality is a smart air quality monitor with CO2, humidity and temperature sensors that helps evaluate the dynamics of air quality at home, in the office, in the workplace or in any other space.
Users get medical-grade measurement accuracy, comprehensive in-app information, and automation scenarios.
An Ajax security system with LifeQuality turns on ventilation or humidifier if the air quality indicators are below comfortable.

Compatibility

Hubs : Hub 2 (2G) / Hub 2 (4G) / Hub 2 Plus / Hub Hybrid (2G) / Hub Hybrid (4G)
Radio signal range extenders : ReX 2
Communication

Jeweller communication technology :
Two-way communication / Protection against spoofing. / Block encryption with a dynamic key / Instant notifications / Remote configuration via the Ajax apps
Frequency bands : 866.0 – 866.5 MHz / 868.0 – 868.6 MHz / 868.7 – 869.2 MHz
905.0 – 926.5 MHz / 915.85 – 926.5 MHz / 921.0 – 922.0 MHz
Maximum effective radiated power (ERP) : up to 20 mW (Automatic power regulation to reduce power consumption and radio interference)
Radio signal modulation : GFSK
Radio communication range : up to 1,700 m
Encrypted radio communication
Radio frequency hopping
Wings communication technology
Two-way communication / Block encryption with a dynamic key / Re-uploading data packets in case of error during data transfer
Frequency bands : 866.0 – 866.5 MHz / 868.0 – 868.6 MHz / 868.7 – 869.2 MHz / 905.0 – 926.5 MHz / 915.85 – 926.5 MHz / 921.0 – 922.0 MHz
Radio communication range : up to 1,700 m
Encrypted radio communication
Radio frequency hopping
Temperature measurement

Sensitive element :Digital temperature and humidity sensor
Measurement range : from 0°C to 50°C
Measurement accuracy : ±0.2°C
Measurement pitch : 0.1°C
Humidity measurement

Sensitive element : Digital temperature and humidity sensor
Measurement range : from 0% to 100%
Measurement accuracy : ±1.8%
Measurement pitch : 1%
Carbon dioxide (CO2) concentration measurement

Sensitive element : digital carbon dioxide sensor
Measurement range : from 400 to 5000 ppm
Air quality assessment levels : normal air: up to 1000 ppm / moderately polluted air: from 1000 to 1400 ppm / polluted air: from 1400 to 2000 ppm / critically polluted air: more than 2000 ppm
Measurement accuracy : ±30 ppm or ±3%
Measurement pitch : 1 ppm
Additional features

Charts : of temperature, humidity, and carbon dioxide concentration
LED indication : green: Normal air / yellow: Slightly polluted air / red: Polluted air / purple: Critically polluted air
Automatic calibration : once every 1–14 days
Manual calibration :is run in the Ajax apps. Suitable for unventilated rooms
Scenarios
Backup memory : up to 3 days
Anti-sabotage protection

Accelerometer
Protection against spoofing : device authentication
Communication loss detection : within 36 second
Power supply

2 × CR123A battery / Up to 3 years of autonomous operation
Enclosure

Dimensions : 77 × 77 × 34,5 mm
Weight : 127 g
Operating temperature range : from 0°C to 50°C
Operating humidity : up to 85%
Protection class : IP50