Welcome to our store! 1. AC 80-500V LED dual display shows AC voltage and frequency simultaneously. 2. Data is more intuitive, with a dual-color LED display (red + green) for clear and easy monitoring at a glance. 3. No power supply needed; simply connect the two wires directly to AC 80-500V to complete the testing. 4. Easy to install with embedded buckle installation for enhanced stability. 5. The meter is only suitable for pure AC 45-65Hz power supplies and should not be used for square waves or inverter outputs. Features: * AC 80-500V LED dual display shows AC voltage and frequency simultaneously. * Data is more intuitive, with a dual-color LED display (red + green) for clear and easy monitoring at a glance. * No power supply needed; simply connect the two wires directly to AC 80-500V to complete the testing. * Easy to install with embedded buckle installation for enhanced stability. * The meter is only suitable for pure AC 45-65Hz power supplies and cannot be used for square waves or inverter outputs. Specification: Condition: 100% Brand New Product Model: YB4835VF Material: Plastic Color: White, Black (Optional) Weight: Approx. 70g/2.5oz Display Mode: 0.39-inch LED, Voltage: Red, Frequency: Green Measurement Accuracy: 1% (±2 words) Test Frequency: 2 times/sec. Frequency Measurement Range: 45.0 - 65.0 Hz Minimum Resolution: 0.1Hz Voltage Measurement Range: AC80-500V Minimum Resolution: 1V Package List: 1 x Voltage Frequency Meter Note! Please note that the new and old versions of this product will be shipped randomly, and please ensure you don't mind before ordering.