Instapark&reg; BPA15-03A AC/DC Power Adapter with On/Off Switch for Laser Diode Modules, 3V/5A Specifically designed & customized for constantly supplying power for laser modules On/off switch for convenient operation Alligator clips for easy connection with laser modules AC input: 110V, 50/60 Hz DC Output: 3V, 5 Amp, 15 Watts