What is the pin layout for the Fischer connector?
The pins on the Fischer connector are: • Ground • Sensor 1 positive • Sensor 2 positive • Sensor 3 positive The VR3 connector has the single sensor on pin 3. That allows you to use your existing VR3 cable to plug into the Shearwater. Since most rebreather manufacturers have a VR3 cable attachment available, this makes it easy to connect your Shearwater.