Thank You. Is the information detailed above (from January) still accurate for sending you the repair?They use an infrared LED and infrared receiver, these parts do fail with age, they are on 24/7. While they are "the same" provided they are made after 2015, they vary slightly in voltage signal and for this reason when a sensor is replaced, the circuit board needs to be calibrated to the new sensor. We do have sensors back in stock, they are $29.49 installed.