Feature 1 After installation, the panel front reaches IP54 protection level and is safe to use. 2 Ability to measure and display voltage, frequency and current simultaneously. 3 3-digit high-brightness LED digital tube displays the measured value for easy reading. 4 The current transformer ratio can be set and the operation is simple. 5 Parameter display: AC voltage, frequency, current, power, power factor, accumulated working time, range and accuracy.GV25 MKII is a lightweight and practical module for measuring and displaying AC voltage, frequency, current, power, power factor COS and accumulated running time. It can replace the traditional pointer meter and realize a multi-purpose meter. Features: 1. After installation, the panel front reaches IP54 protection level and is safe to use. 2. Ability to measure and display voltage, frequency and current simultaneously. 3. 3-digit high-brightness LED digital tube displays the measured value for easy reading. 4. The current transformer ratio can be set and the operation is simple. 5. Parameter display: AC voltage, frequency, current, power, power factor, accumulated working time, range and accuracy. 6. 6-in-1 Generator Digital Meter: single-phase AC voltage, current, frequency, power, power factor COS, cumulative time, three-screen LED display with screen change button Specification: Condition: 100% Brand New Item Type: Generator Digital Meter Power consumption: MAX 1W Operating temperature range: -20 ~ 65 Volume size (W * H * D): Approx. 78 mm * 78 mm * 63 mm / 3.1 * 3.1 * 2.5in Install open hole (W * H): Approx. 67mm * 67mm / 2.6 * 2.6in Protection Level: IP54 (after installation, front panel) Voltage: 110V system: AC90 ~ 130V, error 1% 220V system: AC165 ~ 265V, error 1% 380V system: AC360-440V, error 1% Frequency: 50Hz system: 45-60Hz, error 0.5% 60Hz system: 55-65Hz, error 0.5% Secondary current 5A:5-6000 A, error 2.5% Secondary current 50mA:1-200A, error 2.5% Power: Error 3%, within the range Power factor COS:0-1, error 1% Accumulated working time: 0.0-9999 hours, minimum time 0.1H Working power supply: 110V, 220V system: AC85 ~ 265V, 50 / 60Hz 380V system: AC360 ~ 440V, 50Hz Package List: 1 * Digital Meter 2 * Fixing screw Note: 1. 110V, 220V is universal, 380V needs to be ordered separately. 2. With the L version, you need to match the dedicated current transformer. 3. Please allow slight error due to manual measurement. Thanks for your understanding. 4. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.