Item Type: Generator Digital Meter _x000D_ Functions: _x000D_ 1. Capable of measuring voltage, frequency, accumulated running time and current running time simultaneously_x000D_ 2. 4-digit high-brightness LED digital tube displays the measured value_x000D_ 3. With screen change button_x000D_ 4. DC power supply, stable operation_x000D_ 5. Wide voltage measurement range_x000D_ Parameter Display: _x000D_ 1. Phase voltage V_x000D_ 2. Frequency Hz_x000D_ 3. Cumulative running time H_x000D_ 4. Current running time R_x000D_ Range and Accuracy: _x000D_ 1. Voltage: AC0-450V, error 1%_x000D_ 2. Frequency: 10-70HZ, error 0.5%_x000D_ 3. Cumulative Running Time: 0-9999H_x000D_ Specifications: _x000D_ 1. Working Power: DC8-36V_x000D_ 2. Power Consumption: maximal, 1W_x000D_ 3. Operating Temperature Range: -20 to 65_x000D_ 4. Size (W x H x D): Approx. 58 x 54 x 41mm / 2.3 x 2.1 x 1.6in_x000D_ 5. Installation Opening (W x H): Approx. 47 x 37mm / 1.9 x 1.5in