2B Monitor and Alarm probes.
In
very critical installations such as emergency
lighting or sprinkler pump motor starting it
is probably a wise investment because it can
forecast trouble with a dimming green LED as
well as warn the user to add water by virtue
of the red flasher.
This
probe has a shaft length of 1-7/8" but
other lengths are available. A black and a red
wire are for connecting to the screws on the
negative and positive battery posts respectively.
Each
wire has a 5/16" diameter terminal lug.
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