1.Hosmart Advantage: 30 years+ intercom home system produced factory by our leading technology.
2.Wireless intercom system MUST add to our an existing Hosmart intercom system or doorbell system to work
3.Crystal clear,Digital communication,Over 16+ different ring tones. adjustable volume.Can communicate with any your intercoms.
4.1500 FT range,work with adapter (included) and 18650 battery (included) ,easy setup.
5.Compatible with the following Hosmart wireless intercoms-HY777/787.