Quad 3 1/8" squareLeft; OP 100 psiTop; VOLT 6-16 vdcRight; OT 100-260fBottom; CHT 100-700fUse with387-100KV OP sender sold separately48" type "J" CHT thermocouple sold separately399 series OT sender sold separatelyLight kit 186-12A2L sold separatelyInstructions 3AQ5KV$404.80PriceSize3 1/8" SquareOP Range0-100 psiOT Range100-260 FCHT Range100-700 FVolt Range6-16For use on,12 vdc systemsQuantity*Add to Cart