This module has two main functions. The first function is the analog signal followed by the op amp, which is suitable for A/D conversion. The second function is the switch signal, which can pre-set the current limit value. When the actual current value is greater than the pre-set current value, the switch signal will change from low level to high level, and there will be an LED indicator to indicate. Simple and easy to use. Application areas: AC and DC current detection; motor stall detection; leakage detection; multi-channel current detection. Application: Intelligent car motor overcurrent detection, stall protection current detection, short circuit protection testing, demonstration teaching experiments and other occasions to facilitate the secondary development. Main chip:LM393 op amp, WCS2702 Working voltage:DC DC5V With signal output indication Current detection range is wide DC±2A AC:1.4A Current detection resolution is 1V/A Output overcurrent signal indication Overcurrent signal setting critical point is adjustable, and the setting resolution is 0.1A With mounting holes, it is convenient for firmware installation Sampling current conversion analog signal output, which can be connected to ADC, TTL level signal output, and can be connected to 10-port control of single-chip microcomputer. The output signal is: analog signal and switch signal Colour:Black Material:PCB+electronic components Package Contents: 1 * Current Sense Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.