The MCP1A-R470SG-01 by KAC is an Fast and Simple Installation Indoor Fire Alarm Call Point. Patented plug and play design with unique terminal block concept Full system test (open/short circuit/earth fault) prior to unit installation No chance of accidental site damage through last minute fit of unit No re-termination requirement saves installation time Flush call point with 470 Ohm resistor and N.O. contact. Complete with glass. Supplied With Surface Backbox, Test Key & Glass Element Dimensions: Semi-flush mounting: Height: 93 mm Width: 89 mm Depth: 27.5 mm Surface mounting: Height: 93 mm Width: 89 mm Depth: 59.5 mm Weight: Flush 130 g Surface 180 g Current Rating: 2A (switching only) Operating Voltage: 30VDC maximum Operating temperature -10°C to +55°C Relative humidity: 93± 3% non-condensing Ingress Protection (IP) Rating: IP24D You may also be interested in the KAC Alarm replacement glass. Some Accessories for this product - SC070 Call Point Reset Keys, PS200 - Hinged Call Point Cover or MUS155 - Replacement Call Point Glass