1)  Suitable for homes, office installed in or outdoors buildings and ships etc.

2)  Only one sound "Dingdong"

3)  Easy to install

4)  Suitable for Hard of Hearing with Strobe feature

5)  Low power consumption

6)  CE certificate

7)  50HZ 110V or 220V

 

*Although line of site is not required, the maximum range is based on optimal conditions with minimal interference. Wireless range is affected by objects such as walls, trees, etc. Actual range may vary, depending on environment.