STI-34108 8-Channel Receiver designed to alert you of several different conditions (such as an open garage door, mail delivered, a car in the driveway, open exit door, removed fire extinguisher or activated push button, etc.). The  8-Channel Receivers allow you to monitor up to 8 different STI wireless alert devices at a single, convenient location. They are supervised for low battery and signal reception and have an audible chime tone or 12 VDC output for the siren. The 8-Channel Receiver offers a mirror function that can work with up to four additional 8-Channel Receivers. Devices can be latching or momentary by zone.