
The 2.5mm jack Tip terminal is connected to the OEM12 functionality of the Openport 2.0, which means is can be used as an ADC voltage input, or a variable voltage or connection to ground can be applied to this teminal.This is typically used with Innovate MTS bus compatible devices such as a wide-band oxygen sensor, or similar devices from other manufacturers. The 2.5mm jack Ring and Sleeve terminals can be used to receive RS-232 data from another device.

In J1850VPW, only the J1850+ pin is used. In J1850PWM both the J1850+ and J1850- pins are used.

Although the device can also be powered via USB, these need to be present for vehicle communications to occur.
