For both emergency and general-purpose broadcast.  With zone selection or all call. PC-programmable system software permits desired functions to be assigned to individual function keys (equipped with 2 LED indicators). Input for BGM distribution or external microphone.

The RM-210F is an expansion unit dedicated for the RM-300X desk top remote microphone. The number of zone selection keys and indicators of the RM-300X can be increased in 10 units per RM-210F.