RDC Resistive Position Sensors Alps Alpine RDC Resistive Position Sensors are compact, lightweight linear sensors that achieve high accuracy through state-of-the-art printing techniques. They also feature high heat resistant rotation detectors using a potentiometer system. A low-profile, 360º rotational sensor is available for control panels and detection of rotation angles. Ideal applications for Alps Alpine RDC Resistive Position Sensors include rotational angle detection of actuators, angle detection for joysticks and gimbal control, paper width detection in copy/fax machines, and angle detection for door mirrors, seat recliners, and headlights.