Allegro acs712elctr 20a t hall effect linear sensor 2 1kv isolation 20a so 8 allegro acs712elctr 20a t the acs712elctr 20a t is a linear current sensor that is designed for precise ac and dc current sensing in a small easy to integrate package suitable for use in industrial commercial and communication systems this device features a low resistance current conduction path and 2 1kv rms isolation as well as 5 5v single supply operation and a low noise analog signal path the hall circuitry