Fast easy setup. No tools required. A light on the receiver shows green when your garage door is closed, but shows red and flashes when your garage door opens. Use anywhere within your home. Universally compatible with any garage door.
Easy to install: Mount sensor to garage door with fastening strip (included) or screws (not included). Plug transformer into receiver. Plug transformer into outlet. Place receiver on table or countertop or mount on wall.
Includes: one garage door sensor, one receiver, one transformer, one 3V lithium battery, fastening strips and instructions.