ICS TRIPLEX T9402 Digital Input Module 100% Brand NewT9402 Digital Input Module for AADvance Safety Controller System Function and Purpose: The T9402 serves as a digital input module within the AADvance safety controller system by ICS Triplex. Its primary function is to read digital signals from field devices such as limit switches and proximity sensors. These signals are then processed by the AADvance controller for safety critical operations. Technical specifications: Model: T9402 Product Type: I O