The Lascar EMV 1025S-X X is an easy to mount LCD digital voltmeter. It features 200 mV full scale reading, auto-zero and auto-polarity. Installation time is greatly reduced with only 3 wires to connect. The user need only drill a single 5.5 mm hole in the panel. The module is fitted to the panel by locating its screw threaded stud through the hole, adding the washer and tightening the nut provided. The module's connections pass through the hollow stud into the target application. A rubber seal is included with the EMV1025SXX, providing splashproof protection for the unit when fitted to the meter during installation.