Water Injection Safety Cut Off - This settings enables a cut off switch. 

This node allows you to assign the output for the Water Injection. This will typically be a DPO (Digital Pulsed Output).

If enabled, you can also assign the input for the Cut Off Switch. This will typically be an AVI (Analogue Voltage Input) or SPI (Synchronised Pulsed Output). This may also be a button on a CAN keypad if fitted.