Key Features Detector Type Electrochemical Detector Transmission Technology Wireless Mounting Type Surface-mounted Best Use Home Warning Decibels 85 dB LED Indicators Yes Product Color White Case Material Acrylonitrile Butadiene Styrene (ABS) Built-in Display Yes Display Type LCD Alarm Mute Yes Number 1 Certification BS EN 50291-1:2018, BS EN 50291-2:2019 Power Source Battery, DC Battery/Battery Voltage 3 V Battery /Battery technology Lithium low charge indicator Yes Battery life 10 year (s) Weight and dimensions Width 129 mm Depth 31 mm Height 76 mm Weight 121 g Operating conditions Operating temperature 10 - 40 °C Storage temperature range 20 - 50 °C Relative humidity in operation 30 - 90% Humidity in storage 30 - 90% Humidity in storage 30 - 90% Box contents Operating instructions Yes Technical details Sustainability compliance Yes Sustainability certificates CE, UKCA Warranty period 5 year (s)