The Wireless 433MHz 4 Button Transmitter is designed for long range wireless access control of garage doors or sliding gates. Each transmitter is encoded with a Wiegand compatible ID number so that usage can be controlled and recorded by most electronic access control systems on the market. This high quality transmitter is also hermetically sealed to protect against water or other foreign substances. Delivering an impressive read range from 100 to 200m (328 to 656ft) in open environments, this transmitter offers both convenience and security with unmatched performance.