This pressure sensor is perfect for measuring fuel, oil, or boost pressures up to 100 PSI and is compatible with many aftermarket engine management systems, including MegaSquirt and MS3Pro. The sensor delivers a reliable, linear 0-5V output for seamless integration with your ECU. Features: Measures pressures from 0 to 100 PSI 1/8” NPT screw-in design for easy installation 0-5V output for compatibility with a wide range of aftermarket ECUs High-accuracy sensor with ±1% full scale Durable, robust construction designed for harsh environments Specifications: Pressure Range: 0-100 PSI Output: 0-5V linear signal Thread Size: 1/8” NPT Accuracy: ±1% full scale Working Temperature Range: -40°F to 257°F (-40°C to 125°C) Input/Output Values: 0.5V = 0 PSI 4.5V = 100 PSI **Firmware 1.6: Select the “Linear 0.5v-4.5v” Option for an output range of 0.5V to 4.5V, corresponding to a pressure range values of 0 to 100 PSI.**Firmware 1.5 or Older: Select the “Linear” Option for an output range of 0.0v to 5.0V, corresponding to a pressure range values of -12.5 PSI to 112.5 PSI. **Using the 0-100psi Sensor for Dome Pressure: Only Select “Linear” & Pressure Sensor MUST be scaled in KPA 0v = 13.81 kPa 5v = 875.69 kPa Wiring: Red: 5V Vref Black: Sensor Ground Yellow: Signal Output to ECU Included in Box: 0-100 PSI Pressure Sensor (Optional) 15ft Cable with 90° Boot