RF DC 6V Wireless Switch Transmitter Receiver Remote Control Learning Code 433Mhz 1CH Round Type Remote control of the on and off of pump, machine,tool, socket, LED lights, doors, alarm system Easy to install and use. The wireless signal can pass through walls, floors and doors Material: durable PCB board and plastic Input Voltage: DC 6V, 1 Channel Board Dimension: 22x15x9mm; Case Dimension: 25x18x12mm