Telephone Intercom, 433Mhz Wireless Intercom System Calling Intercom Secure Interphone Handsets Extendable for Warehouse Office
- Wireless Intercom System: Door Phone Intercom System, no telephone wires needed, built-in rechargeable battery, works with or without electricity power, standby time 30 days. Save your phone bills..
- Plug & Play: Simple to use. Can be placed on desk or mounted on any surface, horizontally on wall surface or vertically on any flat surface..
- Barrier Free: Clear two way communication and has an impressive 100 meters within building and 500 meters in the open field without barrier and long distance reception transmission..
- High Performance: Clear Voice and Secure Digital Communication. 433MHz working frequency, anti-interference signal..