Features:1. This monitoring relay can monitor own working voltage.2. 8 kinds of rated voltages are adjustable, can apply to voltages in all regions of the world3. The working status of the relay is indicated by the LED indicator4. Ultra-small size and it is easy to install.5. It is applied to mobile device connection control, causing accidents in equipment protection against reverse operation, normal/emergency power switch, preventing phase failure of power load.Specification:Condition: 100% Brand NewModel: GRV8-03Monitoring Terminal: L1-L2-L3Power Supply: L1-L2Rated Working Voltage Selection: AC220-230-240-380-400-415-440-460(P-P)Measuring Frequency Range: 50/60HzMeasuring Range: 176V-552VVoltage Threshold Range: 2%-20% (Rated Voltage)Unbalance Threshold Range: 5%-15%Voltage Fixed Lag Rate: 2%Power Indicator: Green LEDAction Delay Time: 0.1s-10s AdjustableVoltage Measurement Error: 1%Power-On Delay Time: 0.5sKnob Setting Accuracy: 1%Reset Time: 1sTemperature Fluctuation Error: 0.05%C, at=20COutput: 1 x SPDT 10A/AC250VACMinimum Switching Power: 500mWOutput Relay Indication: Red LEDMechanical Life: 10000000Electrical Life (Resistive Load): 1000000Storage and Transportation Environment Temperature: -35-75Installation Method: 35mm Rail InstallationProtection Level: IP20Installation Altitude: 2000 MetersPollution Degree: 2Wiring Capacity: 1x2.5mm2 or 2x 1.5mm2Optional Style: M460, M265Weight: Approx. 76g / 2.7ozSize: Approx. 90 * 18 * 64mm / 3.5 * 0.7 * 2.5inPackage List:1 * Monitoring Relay