The new Synergy+ Heat detector is one of the new auto detection units by Evacuator Alarms. Designed to pick up a change in room temperature, the device will trigger any linked non detector Synergy+ units. The built in heat detector is useful in areas where controlled fire, smoke, mist or dust may be present, meaning the system will not accidently be triggered. The device also features three easy to use buttons for manual testing and easy pairing modes. Please Note, this product is for indoor use only. Upto 3 years Battery Life Apollo 57 degree Heat head Category One radio module CE. UKCA, ROHS & EMC Compliant Battery Low indication Secure Reset Function Totally wire free operation Mesh Radio connectivity Radio Frequency 869Mhz 2Km line of sight range Status LED Please Note, this device does not emit any sound ADDITIONAL INFORMATION Dimensions H 165 x W 165 x D148mm IP Rating Indoor Only Power Source FMCEVAWBPACK4 Product Code FMCEVASYNP3 Weight 1.6Kg