(57) A fire alarm testing device including an electrical-switch assembly, and internal
circuitry. The electrical-switch assembly includes a face-plate with the face-plate
including two screw-holes, a control knob, two voltage/resistor measuring points,
a plurality of electrical contacts, and two mounting screws. The internal circuitry
is mechanically and electrically coupleable to the face-plate, and electrically communicable
with a fire alarm system. The control knob also includes four rotatable positions
including normal, open, ground, and short such that the fire alarm system is testable
by rotating the knob. The electrical-switch assembly is rated for 0-40 volts direct
current and is rated up to 350 milliamps and is rated up to 3.5 continuous current-amps.
Preferably, electrical-switch assembly is water resistant sealed from dust and debris.
Protective caps or plugs are installed where required to prevent foreign objects into
the device.
|
|
