Hall effect crankshaft or camshaft position sensor. Just like our standard Hall effect sensor, except it has a lower maximum temperature (at 85 degrees C, that's still a lot) and is mounted in a threaded stainless steel housing. Threads are M12 and mounting nuts included. Runs off 5 to 24 volts, and gives a nice square wave so there's no variable voltage issues. Has a 12 inch long, 3 wire pigtail. Here's what the wires do:
Red - Supply voltage; connect to either VREF or 12 volt switched power.
Blue - Output signal. On a MegaSquirt, connects to pin 24. We just set our MegaSquirt up for the VR conditioner and it works great. V3.0 MicroSquirts can also do this, but older MicroSquirts will need to use the Hall effect input.
Black - Ground.
If you have the newest revision of our wiring harness, you can just tee the red wire on the sensor into the red harness wire, and the black and blue wires connect to the respective black and white wires inside the sheilded RPM input wire. Red to red, black to black, blue to white - pretty straightforward with only one mismatched color.
Specifications
Operating voltage: 4.75 to 24 volts
Maximum overvoltage and reverse voltage: +27 to -25 volts
Maximum output current: 20 mA
Maximum frequency: 15 kHz
Temperature range: -40 to +85 degrees C
Recommended air gap:1.5 mm
Thread pitch: M12 x 1 mm
Threaded length: 36 mm
Overall length: 46 mm, not including wires
Package material: Stainless steel