... lgithing. The specification of Photoelectric (CE approved,light sensor,photoelectric sensor,sensor switch,photocell) as following:Specifications· Nominal Voltages 120 ... 13.7 years)· Turn-On/Turn-Off<1:4(Electronic) , <1:5(Thermal )· Delay Time(Instant on)3 to 5 seconds· Operating ... resistant gasketContacts: Hard brass Photoelectric (CE approved,light sensor,photoelectric sensor,sensor switch,photocell)