Condition is new without a box.  Unit works and has the following.

Battery or DC blank and red pigtail wires.

Removable water cap/plug on front uncovers 6 pins for unknown use. 

1/2" NPT female threads.

Doesn't appear to be any movable parts. 

Label Reads "WATER SENSOR shots down machine if the presence of water is NOT Detected in the pump".

Thank you!