Beam Type Smoke Detector, 24 VDC, Model: CKLD-KPT has been designed using an obscuration detection system in order to eliminate the effect of smoke color for fire detection. As CKLD-KPT detects the smoke obscuring its light axis spread over the whole monitored area, it can precisely detect the fire event in the early stages. SPECIFICATION Monitoring distance: from 5m to 100m Rated Voltage: 24 VDC Supervising current: 760 µA Rated current: in fire 65 mA Weight: Transmitter 485g, Receiver: 506g Ambient Temperature: - 10ºC ~ +50ºC