Four 1-CH 85~250V Wireless Receivers and One 4-Button RF Transmitter (Model: 0020622) choose accessories you can replace external antenna

you can replace external antenna of the receiver

The receiver can also work with 2-button transmitters

This wireless switch or radio receiver is an electric device with 2 channels dry relay output (Normally open and normally closed)

or 9±1VDC (model S1UA-DC09)

Four 1-CH 85~250V Wireless Receivers and One 4-Button RF Transmitter (Model: 0020622) choose accessories you can replace external antennaThis is a 4 button RF transmitter that controls four 1 channel receivers, with each button of the transmitter controlling one receiver. Package Include: 4 x Receiver: S1XC AC 1 x Transmitter: CP 4 1 x User manual Application: For long range remote control on and off AC electrical equipment, such as lamp, lights, LED lighting, motor, fan, pump, solenoid valves, door lock, heater, etc. Feature: Wireless control, easy to install. The transmitter remote