1000m wireless intercom
* Wireless Intercom System 433Mhz Secure Interphone Handsets Extendable for Hotel, Warehouse, Office, Home, School, Shops
* Clear Voice and Secure Digital Communication. 433MHz working frequency, anti-interference signal. It does not require installation nor an installer, simply plug and use
* Rechargeable battery built inside, works with or without electricity power ( 4-5 days)
* Long communication range, distance up to 1000M depending on the environment.
* Can be placed on desk or mounted on any surface, horizontally on wall surface or vertically on any flat surface
* It does not require a sim