Remembering to close your garage door can frequently be difficult, especially if your hands are full when you enter the house. But your home can still remain safe, thanks to the Household Garage Door Alert Sensor, which works by sending a wireless signal to the Household Alert Receiver (sold separately), which in turn indicates the status of the garage door immediately with both audio and visual indicators. The Household Garage Door Alert Sensor can be purchased together with the Household Alert Receiver as a kit. Since the Household Alert Receiver expands to accept signals from four sensors, the Household Garage Door Alert Sensor can also be used to expand the Household Motion Alert System, the Household Door/Window Alert System or the Household Water Alert System. A Combination Set is also available, which includes both the Garage Door Alert Sensor and a Motion Alert Sensor to trigger its Household Alert Receiver. The garage door sensor mounts near the bottom of your garage door and sends a wireless signal to the receiver in your house when the garage is opened. With its range of 300 feet, you'll be able to place the receiver in any convenient location in your home. If you need to cover a distance further than 300 feet, use the Household Alert Wireless Repeater to extend the communication range between the Skylink wireless devices and ensure the security of your home. If you're planning to leave your garage door open while you work in your garden or on your car, the audible alert can be muted easily.