Description 1. Trigger source is the infrared, human-body Unique, the infrared wavelength about 10 microns ! 2. The light-controlled in switch can detect light intensity automatically! If the light intensity is high, Such as in daytime, the lamp will be out work! 3. long-time lighted can be achieved through connection of fire-terminals! 4. This product apply to exhaust fan, incandescent lamp, energy-saving lamp, etc. Technical parameter 1 .Voltage : 175VAC~250VAC 50Hz 2.operating power :< 200W 3.light time : 60 + 20 S 4. Induction angle: 5.working light intensity: <7Lux 6. Working temperature: -20~+50 7. Dimensions: 86mmX86mm 8. Induction distance :5M