The Tele Radio System T20 is suitable for controlling an application using a radio that requires a maximum of 3 functions. This product is useful in various options such as controlling 1,000 objects having the same transmitter like 1,000 gates. In addition, it can operate up to 60 transmitters for only one receiver if more than one user is able to use this in application. This product disseminates at 433.92 or 869.85 MHz. The T20 is a cost saving and efficient for the users with the ability of easily to install. Its battery is exchangeable.