The part number T9802 refers to a digital input termination assembly, specifically designed for use in the AADvance controller system. This component plays a crucial role in the scalability and expandability of the AADvance system, allowing for the addition of more I/O modules and increasing the system's capacity for handling inputs from various devices.
The T9802 digital input termination assembly is designed to support 16 channels of digital input, with the option for simplex, dual, or triple redundancy configurations. This flexibility in configuration allows for increased fault tolerance and the ability to replace faulty modules without disrupting system operation. The assembly is designed to be compatible with the T9300 I/O base units and can be connected to them using expansion cables, such as the T9310-02 backplane expansion cable.
The one in the picture was opened and is damaged it is NOT FOR SALE I used it for the picture as referance only, the last picture shows one of the actual still sealed unit that is being sold