An automatic garage door opener is not just a convenience, it's an investment in your home. Safeguard this investment with the Universal Garage Door Surge Suppressor, which protects your garage door opener system from lightning strikes and power surges. This surge suppressor is easy to install, requiring no tools and plugging directly into a garage outlet. What's Included # Surge suppressor # 2 wires # Instructions The Universal Garage Door Surge Suppressor works with most major brands of garage door opener systems, protecting the entire garage access system, including safety sensors and control panels. The surge protector will stop radiated surge currents from coming through AC power lines. Additional products from the Chamberlain family of garage gadgets include the Clicker Universal Garage Door Remote, which will replace any lost or broken garage door remote control. It will also turn on a light in your home if used with the Clicker-Compatible Remote Light Control. Know that your garage door is definitely down with the Universal Garage Door Monitor, which provides a visual alert if the largest door to your home is wide open. These products are sold separately.