A highly integrated multifunction calibrator featuring several patented technologies, the ADT223A is an ultra-compact, rugged, and easy to use hand-held device for sourcing, simulating and measuring pressure, temperature, and electrical signals. Its smartphone-like menu and interface make the operation simpler and easier. With HART communication capability, the ADT223A is ideal for calibrating, maintaining, and troubleshooting HART instrumentations. Automation and documentation capabilities make the ADT 223A a turnkey solution.