Bellman Visit Contact Mat BE9026This contact mat is used together with the telephone transmitter (required) to notify you when someone gets out of bed or enters leaves a room. When you step on it, the telephone transmitter signals your Visit receiver that alerts you with sound, flashes or vibrations (depending on your receiver). Specs Dimensions: 21. 3" x 15. 6" x 0. 2" Weight: 9oz Connection: 3. 5mm Mono Cable length: 4. 9ft Range: 100ft Warranty: 3 months Video DOCUMENTATION