The Apollo Series 65 55000-317APO is an optical smoke detector. The Apollo 55000-317APO incorporates a pulsing LED that is located within the housing of the detector. The external detector moulding is identical to that of the ionisation detector but has an indicator LED which is clear in quiescent state but with a red light in alarm.
0 to 95% RH
-20°C to +60°C