Reliable communication between fire telephone system and extension and able to register online extension for one time.
Configured with YJGF3040A telephone extension, pick up holder will call the panel and the extension bell rings when panel calling. Configured with YJGF3040B telephone holder and YJGf3040C telephone jack, plug in the jack will call the panel.
Maximum output power of the broadcasting system is 80W with 2 fixed broadcasting zones and short circuit protection. Four sound sources for broadcasting include microphone, external line, MP3 and electronic voice. Two ways to activate: manually control and linkage control. Able to be controlled by external serial-port order and logic control order and activate linkage emergency broadcasting.