Hosmart Advantage: 30 years+ intercom home system produced factory by our leading technology.
Wireless doorbell intercom system can be added to an existing Hosmart intercom system.
Crystal clear,Digital communication,Over 16+ different ring tones. adjustable volume..rechargeable outdoor bell with 18650 battery. hear and speak to anyone at your door from your intercoms.
1500 FT range with no wires,power connection required or 18650 battery-powered (included) design for easy setup.
Weather/Water resistant for outdoor applications.Compatible with the following Hosmart wireless intercoms-HY777/787.