The Megger BM11D (218651CL) Analog / Digital Insulation Tester 5 kV provides a choice of features to suit all applications and budgets. The traditional BM11D instrument became the industry- standard 5 kV tester. It is battery-powered, housed in a rugged case and has a large, simple white-on-black scale. This instrument shows results and test options on a large, clear analogue/digital scale for both practicality and precision. A built-in timer makes both spot tests and PI testing easier to carry out. They are powered by a built-in rechargeable lead-acid battery which can be charged directly from any supply from 95 V to 265 V. All testers incorporate a guard terminal to allow surface leakage to be removed. Pre-set standard test voltages at 500 V, 1000 V, 2500 V and 5000 V are supplemented on the BM11D with a variable test voltage.