vintage alarm bell for fire or burglar alarm system, Archer electric alarm bell 275-498

Vintage Archer electric alarm bell and control for burglar or fire alarm system. The alarm bell is an Archer 275-498 DC bell. It measures 8" across the bell and works with either 6 volts DC or 12 volts DC. The bell still has the original box.

The alarm control is an Archer Master Alarm Control Center with manual with wiring schematics, but the key for the arming switch is missing.

These are in nice clean condition with some wear tot the boxes and again, the key for the control center arming switch is missing.