product name: v-checker circuit tester v-checker circuit tester can check signal for cable assembly from 0-36v, with accuracy 0.1v. it can check continuity of cable assembly. display the on and off figure. led is on when the cable is continuous; led is off when discontinuous. welcome to obdchina.com to get more details of auto ecu decoding & resetting tools, vehicle diagnostic tools which made in china with factory price. fucntion: • check signal for cable assembly from 0-36v, with accuracy 0.1v. • display value and waveform at the same time when the voltage is over 0.1v. when the voltage is over 0.5v, the blue led light on at the same time. • auto waveform freezing. • please visit www.obdchina.com for details.