Can you ID this device?

olc

Senior Member
I think it is used to control the volume of a bell for a simple infirmary emergency call system.
EC device.jpg
I don't have the luxury of tracing the wires or playing with it.
 

augie47

Moderator
Staff member
Location
Tennessee
agree. Looks like an interval timer... % time on--% time off
seen them used on alarm.. device sounds for "X" time, then off "Y" time, etc. makes the sound uniquely identifiable.
 

kwired

Electron manager
Location
NE Nebraska
It is probably a repeat cycle timer. Augie mentioned interval timer, but a true interval timer goes through the programmed interval once then needs reset before it will go through again. This one keeps cycling on time, off time, on time, off time .... as long as there is an input signal.
 

kwired

Electron manager
Location
NE Nebraska
1587733508624.png Omron has repeat cycle timers, but they look like this one. Two dials centered on common midpoint, and multiple time ranges from a second to ten hours per division on the dial.
 
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