1.Descriptions: The precision 1-channel photo-relay module adopts genuine high-quality industrial-grade components, military-grade double-sided PCB board, and has two-color LED signal indicator; the layout is comprehensive, the module performance is stable, and it can be widely used in various brightness measurement and control occasions. 2.Features： 1>.The brightness threshold is adjustable (the sensitivity is adjustable), and the on-board brightness threshold potentiometer can be adjusted according to different needs. 2>.Waterproof light sensor head, can be used outdoors, effectively prevent outdoor weathering and weathering invading the sensor head, greatly increasing the service life. 3>.With normally closed normally open terminals, can use different terminals according to different needs. 4>.With reverse connection protection (to prevent reverse firing chips), to prevent accidental reversal, burning circuit. 5>.Intelligent adjustment design, when the relay is activated, automatically fine-tune the action threshold, solve the problem of repeated action of the critical value, and prevent the critical point from repeatedly switching. 3.Parameter: 1>.Input Voltage: DC 12V 2>.Work current:50mA 6>.Over Current Protection:Yes 7>.Short Circuit Protection:Yes 8>.Operating Temperature:-20℃~75℃ 9>.Operating Humidity:5%~95%RH 10>.Module Size:81*37*21mm 4.Package: 1>.1pc DC 12V Photosensitive Sensor Controller Relay Driver