Pack of 2 portable 433 MHz transmitters for TX2EV TX4EV TX2EVS TX4EVS TX2REV TX4REV TX4UNI TX4UNI TX4RUNI TX4UNIS, 4 channels, Rolling Code, Garage Door Opener Remote Control

Compatibility: This 433 MHz remote control is compatible with TX2EV, TX2EVS, TX4EV, TX4EVS, TX2REV, TX4REV, TX4UNI, TX4RUNI, and TX4UNI. Please do not purchase if your model is not listed. This is an alternative to other garage door openers; it is not an original garage door opener. Frequency: 433 MHz, transmission distance: 50-100 meters (open area). It has 4 buttons, two more than most other products, and can control up to 4 garage door openers. Batteries are included and can be replaced and used immediately upon receipt. PROGRAMMING: Rolling code replacement, high-precision remote copying, high copying efficiency, and code loss are not easy, providing a higher level of security than other remote controls. MATERIAL: Made of high-quality plastic, lightweight and durable, the sliding window design prevents accidental activation and protects the buttons from injury and other hazards, ensuring a longer lifespan. The sliding window finger design makes turning the device on and off easier. Unique new design: The long, slim exterior with a silver and black color combination offers understated luxury, perfect for business professionals. The remote control comes with its own lightweight and portable keychain, adding no extra weight.