This module can detect DC current in the range of 0-10A, the accuracy is 0.01A.Functions P-1: Over-current Detection: when the detecting current lt;I1(low limit setting), the relay closes; gt;I2(high limit setting), the relay opens.P-2: Under-current Detection: when the detecting current gt;I2, the relay closes; lt;I1, the relay opens.P-3: Close in the Range: when the detecting current is between I1 and I2, the relay closes; relay opens in other situation.P-4: Open in the Range: when the detecting current is between I1 and I2, the relay opens; relay closes in other situation.P-5: Error Calibration and Delay Time Setting: the relay would not operate.Buttons K1: Modes Selection;K2: 34; 43; 34;K3: 34;- 34;Long press K1 for 2s into modes selection; short press K1 to select function and K2 to enter the mode.Note:After power on, the LED digits would pulse if the detecting current terminal is none.Specifications:Voltage: DC 12VDetecting Range: DC 0~10AAccuracy: 0.01A(10mA)Standby Current: Approx. 20mADisplay: LED Digital DisplayItem Size: 65 * 40 * 18mmPackage Weight: 29g / 1.04ozPacking List:1 * DC Current Detection Module