Product name: Photo switch switch<br> Input voltage: DC 12V<br> Max load current: 10 A<br> Body size: about 4.3 cm x 4.2 cm x 3.5 cm<br> Used: Turns off when there is light, turns on when there is no light, no manual operation.<br> It is a light sensor switch of waterproof processing.<br> The sensor responds to light and dark, and controls ON / OFF of the switch.<br> LED lamps, energy saving lamps, fluorescent lamps, incandescent lamps, ventilating fan lamps, etc. can be used as control targets.<br> Since it is automatic control, it prevents forgetting to turn off the power, and it is also useful for energy saving.<br> You can use it for automatic control in street lights, schools, factories, etc.<br> It is also waterproof so you can use it for cars, boats, and a wide range of other uses.<br> Connect the black wire and white wire to the power supply and connect the red wire and the white wire to the load (electric light etc.).<br> Wrong wiring not work correctly. Please confirm the product image and wire it correctly.<br> Although this product can be used either upwards or downwards, so that the sensor can judge the light and darkness of light<br> Please install it.<br> Color: white + blue<br> Material: plastic + metal<br> Package Contents: 4 x switch<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.