Quad 3 1/8" squareLeft; OP 100 psiTop; EGT 600-1600fRight; OT 100-260fBottom; CHT 100-700fUse with387-100KV OP sender sold separately399 series OT sender sold separately48" type "J" CHT and "K" EGT thermocouples sold separatelyLight kit 186-12A2L sold separately Instructions 3AQ4KVSKU: 3AQ4KV$403.80PriceSize*3 1/8" SquareCHT Range*100-700 FEGT Range*600-1600 FOP Range*0-100 psiOT Range*100-260 FFor use on,*12 & 24 vdc systemsQuantity*Add to Cart