Aiphone NBJ-20 Call Switching Device for NEM-10C,20C

Designed for Aiphone NEM/NEM-A Lamp Memory Intercom Systems most suitably used in nursing homes, private clinics, schools and correction institutions, etc. The calls from subs bening answered by the master in nurse center during daytime, can be routed via NBJ/NBJ-B unit to the master during nighttime. It may also be a popular application that a single master of one floor controls the subs of the other floor(s) during nighttime, while each maste controls its subs seperately during daytime.
Features:
Switches all NA sub wiring from one master to the other to route all call-ins to the master on duty NBJ-20 and NBJ-20B are equipped with a rotary switch Aiphone compatibility:

NBJ-20 Instructions (107.47 KB)