Bosch RFCO-A RADION CO Wireless CO detector F.01U.359.823

Advanced technology CO sensor with 10 years life 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 6 years battery life Battery type Duracell 1.5 V AAA (2x) Typical battery life (years) up to 6 Frequency (MHz) 433.42 Dimensions (H x W x D) 120 mm x 45 mm x 105 mm (4.7 in x 1.77 in x 4.13 in) Weight 172 g (0.38 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)