Bosch RFSM2-A RADION smoke Wireless smoke detector F.01U.359.387

Reliable photoelectric sensor technology Fixed temperature and rate-of-rise heat sensor Built-in sounder and LED indicator for immediate notification Supervision alerts for sensor health, low battery, and tamper conditions Low current draw for up to 10 years battery life Battery type Panasonic 3V CR123A (2x) Typical battery life (years) up to 10 Frequency (MHz) 433.42 Dimensions (Ø x D) 115 mm x 59 mm (4.5 in x 2.3 in) Weight 205 g (0.45 lb) Minimum operating temperature* (°C / °F) 4.4 °C (+40 °F) Maximum operating temperature* (°C / °F) +55 °C (+131 °F) Minimum storage temperature* (°C / °F) -10 °C (+14 °F) Maximum storage temperature* (°C / °F) +40 °C (+104 °F) Operating and storage relative humidity* (%) 0 - 93 % (non-condensing) Minimum alarm sound 85dBA at 3 m (10 feet) Fixed (°C /