Details:<br> Overall Dimensions: 3 ¾”W x 3 ¾”H<br> Faceplate Dimensions: 3 ½”W x 3 ½”H<br> Bolt hole spacing: 2 15/16”W x 2” H (hole center to hole center)<br> K101 “pigtail” wiring harness included<br> 12V DC<br> Color: White or Black<br> Easy readout<br> Monitor tank levels<br> Monitor battery level<br> Control for water pump<br> Controls for electric and gas water heaters<br>