Cordless Soldering Iron Kit, USB Rechargeable Portable Cordless Soldering Iron, 3 Temperature Adjustment Soldering Iron Tool Kit for Home Appliance Repair, DIY
*****Press and hold the switch until the purple light comes on to activate. Then, press briefly to switch to a green light for low temperature, press again for a blue light indicating medium temperature, and press once more for a red light indicating high temperature.******