Notifier MD-4-12 Vintage Fire Alarm Control Panel 12 VDC USED TESTED SEE DESC BUsed, tested and working.
This panel includes: 5x initiating zone modules and 4x relay modules.
A P33V-12 power can is needed to power the panel.
No power supply is included, but can be powered by any source providing 12 VDC (5 amps max).
Was able to get the panel to normal condition, though unsure how the relay modules work due to a lack of documentation.
Cabinet is in good physical shape, has some scratches and paint. A key is not included, panel will ship unlocked (it uses an older key, not 17021).
Zones were resistored out, the signal and relay modules appear to supervise by polarity (wiring a signal completes the circuit).
The wiring to the power module and between rows was redone. Lamps look OK, though some lamps may be burnt out/missing (these are easily replaceable).
Feel free to ask any questions!
The MD-4-12 is a vintage fire alarm panel by Notifier. The MD series of panels were modular systems, with N-PLUG "cans" providing a specific function for a variety of applications. The MD panels were enclosed in a metal cabinet, often nicknamed "mini-fridge" for their retro appearance.