55140 Hall Effect Flange Mount Sensor Littelfuse 55140 Hall Effect Flange Mount Sensor occupies only 3.22cm2 board space and is available with a choice of digital, latching, or programmable analog outputs. The device is available in 2-wire (current output) and 3-wire (voltage output) options. Other options include sensitivity, cable length, and termination. 55140 Hall Effect Sensor is suitable for position and limit sensing, rotation and flow measurement, commutation of brushless d.c. motors, angular sensing, and magnetic encoding.