1.Wide Using Range:Home intercom system wireless transmission at a frequency will not interfere with other devices. The intercom system allows you to communicate easily and effectively at home or in the office. Wireless intercoms for home are widely used in homes, offices, hotels, restaurants, hospitals, banks, stores, and other places.Up to 9999 devices can be connected. 2.One-button broadcasting function: our Wireless Intercom System is widely used in hotels, office buildings, apartments. When we need to have a meeting at the same time, we just need one button to notify all in place. When a tour group comes to the hotel and needs to notify the tourists to gather, there is no longer a need to reach each room, directly through the non-visual phone one-button notification! 3.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. 4.: Use 433MHz working frequency,clear Voice and secure digital communication,strong anti-interference signal. Home intercom system has good range, clear sound, and hands- function,with high fidelity processing technology protection, you can trust these high-quality intercoms for communication.