Voltcraft 70004 LCD Panel Meter and Measurement Range Adaptors - VOLTCRAFT 70004, You can use the Voltcraft 70004 LCD panel meter with a suitable range adaptor to configure the measurement range you need, without the need for additional components. Of course, you can also use the compact panel meter's native measurement range of ±199.9mV DC and accuracy of ±0.1% without the measurement range adaptor. The unit is installed by pushing it into a front-panel cut-out and fixing at the rear. In this form, it is suitable for applications in switch boards, mains power equipment and casings. No galvanic separation of measurement and power voltage is required. Electrical and mechanical measurement range adaptors have been developed for use with this 3½ inch digit panel meter with high-contrast LCD. Please see the technical specification for range details of the adaptors. Voltcraft 70004 A Digital Panel Meter