Features:This module can detect the DC current value, control the on-off of the relay according to the limit current set by users.Detection range is DC 0-30A with the accuracy of 0.01A.With error calibration function.Can turn off the LED display to reduce power consumption.Can be used to limit the current in the circuit, protect electrical equipment from damage caused by current.Specification:Model: YYI-4Supply voltage: DC 7-30VDetection range: DC 0-30AAccuracy: 0.01A (10mA)Standby current: About 20mAWeight: Approx. 86g/3.0ozFunction description:P-11: When the measured current > I1 (low limit current), the relay closed; When the measured current < I1, the relay opens;P-12: When the measured current > I1, the relay closes; Maintain the state until the circuit board power off;P-21: When the measured current > I2 (high limit current), the relay closes; When the measured current < I1, the relay opens;P-22: When the measured current > I2, the relay closes; Maintain the state until the circuit board power off;P-31: When measured < I1, the relay closes; When the current > I2, the relay opens;P-32: When the measured current < I1, the relay closes; Maintain the state until the circuit board power off;P-41: When the measured current is between I1 and I2, the relay closes, opens in other cases;P-42: When the measured current is between I1 and I2, the relay closes; Maintain the state until the circuit board power off;P-51: When the measured current < I1 or > I2, the relay closes, opens in other cases;P-52: When the measured current < I1 or > I2, the relay closes; Maintain the state until the circuit board power off.Setting description:Power on, display the measured current; (if the measured current terminal is none, the LED digits will pulse)Press K1 for the second time (for over 1s to prevent misoperation), the screen shows: P11, k2 adjusts mode, K3 adjusts functionPress K1 for the second time, the screen flashes: 0.05, means the threshold I1 is 0.05A, K2 increases I1, K3 increases I1Press K1 for the third time, the screen flashes: 0.10, means the threshold I2 is 0.1A; K2 increases I2, K3 increases I2Press K1 for the fourth time, the screen shows the measured current , enters the standby stateLong press K2 or K3 in standby state to fine-tune the error of the measured current Package list:1 * DC Current Detection Module.