100 psi Oil pressure sender 240-33 ohms low 20 psi alarm 1/8”-27 NPT Description Input: 0-100 psi Output: 240-33 ohms resistance Thread: 1/8”-27 NPT Operating voltage: 6-24VDC, power rating: 0.5W Performance meets QC/T8-92 standard, stable output resistance M4 nut maximum torque 1Nm The maximum torque for sensor installation is 30Nm Galvanized metal parts: blue and white zinc G terminal instrument, WK alarm indicator, shell ground (11 psi) warning output, it is a switch to ground (case). When pressure is higher than 11 psi, the WK switch will be open. When pressure is lower than 11 psi, the WK switch will be close, or connected to ground. Dimensions: body diameter 1.5", body length 2.4" This is a high quality, high reliable sender. This sender is made by our specification.