Power Supply Specification: UL Certification IS REQUIRED. US Plug for 120V Barrel Jack output 5.5mm OD, 2.1mm ID, 11mm length Electrical Specifications (@25C) 1. Input Voltage rating: 110-130VAC, 50-60Hz (ok if wider) 2. Output Voltage: 12VDC MINIMUM (not 12 VDC +/- ) 3. Output Current: 1.0 4. Regulation (line & load): +10%/-0* (or 12.0 vdc minimum) 5. Ripple & Noise: 150mVpk-pk Max* 6. There is no efficiency requirement. 8. Over voltage and short circuit protected Show More