Household Alert Receiver, GM-318R

Works with up to 4 sensors. (sensors sold separately).
Monitors the sensors and their battery condition automatically.
Both audio and visual indicators.
Operating range: 300 feet.
AC adapter included.
Easy to set up.
FCC/IC approved.
One year warranty.

It's easy to set up a wireless alert system in your home, protecting it from break-ins and damage, thanks to the Household Alert Receiver. This receiver will accept wireless alerts from up to four different sensors, including an indoor/outdoor motion sensor (70-527), a water-leak sensor (70-528), a door or window breach sensor (70-529), and a garage door sensor (70-526), which will remind you to close the garage after you enter your house. You'll receive both audible and visual alerts from the Household Alert Receiver, which will beep and flash upon a breach. All sensors are sold separately.

When the monitored door, window, etc. is opened, the receiver will alert you. It will beep and flash. For zone 1, you will hear "beep, pause, beep, pause, beep,..." for zone 2, you will hear "beep, beep, pause, beep, beep, pause,...", etc. The beeping and flashing will continue until the magnet contact is returned to the sensor (monitored item closed). You can select the beeping volume to Hi, Low, or OFF; you can also press the Mute button if you know the contact is going to be open an extended period of time.