This small key fob transmitter / receiver pair has 4 channels and a range of about 200'.
This small key fob transmitter / receiver pair has 4 channels and a range of about 200'. Operates at 433 MHz in the UHF band for reliability and range.
The transmitter fits on your keychain and is powered by a 12V battery (included). The receiver requires 5 Volts DC.
The transmitter and receiver can be set to use any one of 256 security codes to avoid interference and unintentional activation. Security codes also allow you to have multiple receivers respond to the same transmitter or multiple receivers only respond to specific transmitters. A receiver will ONLY respond to a transmitter with the same security code.
Because you control the output of the receiver, it can be used to control just about anything with the appropriate circuitry: Lights, gates, doors, even robots can be controlled with the 4 channels.