Hello. Welcome to Futurlec. The electronic components Superstore. To find the component your looking for, either search by Part Number or visit the relative department. Need Help. PANEL METERS VOLTM4DB40VDC - 4 Digit Green LED Volt Meter - 0-40V DC Photograph Features High-Accuracy, Inexpensively Priced 4 Digits with 15mm Digit Height With Switchable Backlight Overrange Protection Range: ±39.99V Resolution: 10mV Accuracy: ±0.3% Power Supply: 5Vdc Meter Dimensions (LxWxD): 79mm x 42.5mm x 25.5mm Panel Cutout (WxH): 76mm x 39mm