Telephone Intercom, 433Mhz Wireless Intercom System

Feature:

• 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.
• 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.