Shenzhen Fanhai Sanjiang Electronics Co., Ltd. products

GB9221 series fire alarm broadcast amplifiers are an extension device for emergency broadcast at fire or other accident scenes.In the field of fire broadcast, GB9221 must be used with the GB9242(Fire Broadcasting Host)to complete the fire broadcast. Background music broadcast can be directly played by external input source signals (such as CD/MP3 player, tuner, etc.) when there’s no accident event.

The DH9901E fire telephone extension with address is a two-wire fire telephone extension (hereinafter referred to as the extension). The extension is designed with non-polar wiring and built-in microprocessor, can operate together with a DH99E fire telephone host. In addition, the local address can be set by manual dialing with the dial switch. The host can be called by extension with off-hook operation, and communication is enabled by off-hook while the host is calling. The extension and the host can realize full-duplex communication, characterized by the simple and convenient operation, as well as clear communication.