The FLUKE-772 Milliamp Process Clamp Meter is a versatile tool for testing and troubleshooting control system I/O. It measures 4-20 mA signals via its clamp with 0.2% accuracy up to 20.99 mA, and can also perform in-circuit measurements up to 24.00 mA. The device can source or simulate mA signals from 0 to 24.00 mA, providing a maximum drive of 24 mA into a 1,000 ohm load. With its built-in 24V loop power supply, the FLUKE-772 allows users to power and test transmitters in the field, making it ideal for process control applications without de-energizing the circuit.