AC 110V to DC 12V 10A 120W Universal Regulated Switching Power Supply Adapter Transformer Driver Converter for LED Strip Light, CCTV Security Camera System, Computer Project

Package included：1 x 12V10A 120W Regulated Switching Power Supply (power cord is not included). Be sure to confirm the input and output voltage first: 1. You can choose the proper input voltage (110V/220V) by a black switch to avoid damaging. Left is: AC 110V, Right is AC 220V. Please set the switch to 110V for USA/CA. 2. The 12V 10A output voltage can be regulated by ±15%, which greatly expand its application range. There is a yellow botton on the right corner. Turn the yellow button clockwise, the output voltage could be fine tuning. 3. The max use of power should be no more than 80% of the full loads, otherwise,the power supply's spanlife will be shortened. We recommend you to use this 12V 10A 120W power supply to power devices less than 8A 96W. 4. This Unit "DOES NOT" comes with installation instruction, wiring cable, on/off switch, or screws. Professional installation of qualified electrician is highly recommended. 5. High Voltage inside, do not remove the cover. Dust the switcher out every 2 or 3 months if necessary. Why does the LED power supply stop working？ Maybe the overcurrent protective switch (in the power supply) disconnect. Please unplug your AC cable, it's important! Then wait about 10 minutes. It will be auto recovered. Then reconnected it, it will work well.