This unique voice receiver sounds programmable messages when a monitored site is tripped. The receiver offers ten tones/tunes and 53 selectable words (available in English or Spanish). Selectable words can be programmed in sets of up to four to create a custom message (i.e. 'ding' side gate open, front driveway alert, rear patio motion alert and 'buzzer' safe trouble). Monitors up to 4 STI transmitting devices at a single, convenient location. Operates up to 1000 ft. (line of sight) and is supervised for low battery and connection. Can be mounted on a wall or set on a table. Includes easy voice prompts for programming. Monitors devices such as: front/side/back doors, gates, windows, driveways, mailboxes, cabinets, safes, docks, pools, sheds, gates, garages, decks, patios, barns, medicine/gun/liquor cabinets, etc.