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Power tested. Unit powers up and the display is functional. When powered without the associated level sensor, the controller displays "Sensor Not Fnd" and the POWER ON/ERROR LED alternates green/red, which is consistent with a missing sensor. No further functional testing performed.
32-122 DEG F AMBIENT TEMP
LOW WATER CUTOFF
5 SECOND TIME DELAY
120 VAC SUPPLY
50/60 HZ
RS-232 / RS-485