The Armada Technologies PRO50K Digital AC/DC Solenoid Activator with Multimeter Kit with Filter Probe offers a digital capability allowing it to test AC, DC, high resistance, and any low voltage solenoid out there. This model offers a digital LCD screen and a built-in digital multimeter. The Pro50 can not only do these tests as the old analog solenoid activators can, but it can do it for all low voltage solenoids, not just 20-60 ohm AC models. That means DC and high resistance solenoids for lightning protection can be tested, diagnosed, and operated/chattered, all from one tester. The Pro50's built in multimeter can test for AC, DC, and ohms and is voltage protected to 120 volts. This more detailed information, given by the multimeter, replace the "dumb" LED lights that have no flexibility or ability to interpret results like a multimeter does. The included PRO210F Advanced Wire Tracing Probe identifies wires and cables by tracing tones from the PRO50.