Product FeaturesDual Ray Technology provides better particle size differentiation resulting in fewer false alarmsSmoke threshold is adjustable and automatically compensatedRotary switch addressingFlexible work modes determined by the control panelSelectable base locking mechanism prevents malicious removal of the detectorKey SpecificationsCurrent consumption (mA): 0.17 – 5 mAMaterial: PlasticMounting type: Ceiling-mounted; Wall-mountedOperating relative humidity, non-condensing (%): 0 – 95 %Operating temperature (°C): 0 – 38 °COperating voltage (VDC): 24 – 41 VDCPermissible air speed (m/s): 20 m/sStorage temperature (°C): -10 – 60 °C SKU: ES.BOS.FAP-440-D Amperage Rating: 5 mA Voltage Rating: 17/41 V DC Degree of IP: IP42 Operating Relative Humidity: < 95% (non-condensing) Storage Temperature: -10 °C ... 60 °C Operating temperature: 0°C To +38°C Dimensions: 112x51mm Material: Plastic Brand: BOSCH Supplier Part Number: FAP-440-D