Explopur Chuango SMK-500 315Mhz Wireless Smoke Alarm Security Fire Protection Sensor for Home Kitchen/Store/Hotel/Factory, White

Wireless 315MHz smoke is a device that detects smoke, typically as an indicator of fire. Commercial, industrial, and mass residential devices issue a signal to a fire alarm system, while household s, known as smoke alarms, generally issue a local ble and visual alarm from the itself. Widely used in home, factory, school, shop, offices, villas, residential areas, corridors, basements, penthouses or other confined rooms. Specifications: Power supply: DC 9V 18mA(battery included) Static current: ≤5uA Alarm current: ≤15mA LED frequency in working state: Once every 32 sec LED frequency in alarming state: Once every 0.62 sec LED frequency in low battery state: Once every 32 sec (last for 30 days) ing area: 20㎡ Alarm decibel: ≥85dB/3m Radio frequency: 315MHz Transmitting distance: ≤80m (in open area) Housing material: ABS plastic Operation Condition: Temperature: -10°C ~ +55°C Relative humidity: ≤80% (non-condensing) Item Size: 102 x 102 x 31mm (L * W * H) Package Size: Approx. 16 x 11 x 5cm / 6.3 x 4.3 x 2in Package Weight: Approx. 160g / 5.6oz