Binqi BQ-278 public network walkie-talkie is a professional public network walkie-talkie, which has the characteristics of smooth communication, long endurance, loud voice, sturdiness and durability. It is a reliable communication assistant for police assistance, property management, service security and other employees. By inserting a SIM card into the cellular network, voice data is transmitted in the form of IP signals, and borderless communication is realized through the globally interconnected Internet infrastructure.# Public Network Interphone# Binqi BQ-278 Public Network Interphone# S60 Professional National Interphone# Binqi Interphone# Hua An Jie Xun Interphone# Youlitong Interphone# Public Network Cluster Interphone# PDT Cluster Interphone# Explosion-proof Public Network Interphone# National Interphone# Ruyitong Interphone# Single Beidou Positioning Interphone# Multimode Intelligent Cluster Interphone