1、GV13DC is a lightweight, low-cost module for measuring and displaying generator voltage, frequency, and running time. It can replace traditional pointer meters to achieve a multi-purpose meter. 2、The module is fixed with conventional bolts, which is safe and convenient to install and will not easily loose. 3、Can measure voltage, frequency, accumulated running time and current running time simultaneously 4、With 4-digit high-brightness LED digital tube to display the measured value and screen change button 5、DC power supply, stable operation and wide voltage measurement range 1 x Digital Display Meter Item Type: Generator Digital Meter Functions: 1. Capable of measuring voltage, frequency, accumulated running time and current running time simultaneously 2. 4-digit high-brightness LED digital tube displays the measured value 3. With screen change button 4. DC power supply, stable operation 5. Wide voltage measurement rangeParameter Display: 1. Phase voltage V 2. Frequency Hz 3. Cumulative running time H 4. Current running time RRange and Accuracy: 1. Voltage: AC0-450V, error ≤± 1% 2. Frequency: 10-70HZ, error ≤± 0.5% 3. Cumulative Running Time: 0-9999HSpecifications: 1. Working Power: DC8-36V 2. Power Consumption: maximal, 1W 3. Operating Temperature Range: -20℃ to 65℃ 4. Size (W x H x D): Approx. 58 x 54 x 41mm / 2.3 x 2.1 x 1.6in 5. Installation Opening (W x H): Approx. 47 x 37mm / 1.9 x 1.5in