Description The device consists of a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which the Hall IC converts into a proportional voltage. Features: Brand new 20A Range ACS712 Current Sensor Module for Arduino Current sensor chip: ACS712ELC-20A Pin 5V power supply, onboard power indicator The module can measure the positive and negative 20A, corresponding to the analog output 100mV/A There is no detection current through, the output voltage is VCC/2 Great for the DIY project. Specifications: Chip: ACS712ELC-20A The low-noise analog signal path Device bandwidth is set via the new FILTER pin 5 µs output rise time in response to step input current Small footprint, low-profile SOIC8 package 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8 Supply Voltage: 4.5V~5.5V DC Measure Current Range: 20A Sensitivity: 100mV/A