The Wireless Doorbell Button Alert lets you know when someone is at the door. When the button is pressed it sends a wireless radio signal to the indoor voice receiver display, operates up to 500' (line of sight), which will sound a tone/tune or...

Selectable tones or voice messages when alerted (English or Spanish). When the unique voice receiver detects a tripped site, it sounds programmable voice messages to alert which transmitter has been activated. The receiver offers ten tones/tunes and 53...

The Wireless Outdoor Motion Detector Alert lets you know when the sensor detects movement in a monitored area. STI-34752 is a high grade professional motion sensor engineered with the world's best components and materials. Special Dual-Frequency infrared...