The STI-V34300 Wireless Garage Sentry lets you know when your garage door or overhead door is open or closed. It includes the 4-Channel Voice Receiver, has a supervised battery and signal reception and operates up to 1000 feet (line of sight). The programmable receiver offers 10 tone/tunes and 53 selectable words (available in English or Spanish).
The Wireless Alert Series wirelessly monitors up to 4 or 8 different STI devices at a single, convenient location. The receivers will chime and flash when a monitored transmitter is triggered, alerting users to the happenings in their home/building. Supervised for low battery and signal reception, they have a range of up to 1000 feet (line of sight).
Everything you need to know about the STI 4-Channel Voice Receiver