The ClairGeo-MP series wireless magnetic parking detectors is used for front-end data collection and real-time monitoring of parking space status. It employs a dual or triple-mode detection approach with highly sensitive magneto-resistive sensors, 24GHz millimeter-wave radar, and photosensitive sensors to detect vehicle information. By detecting changes in the Earth's magnetic field, microwave pulse signals, and photosensitive resistance values, it determines the parking status of vehicles. The detected data is then sent to the intelligent parking management cloud platform, supporting communication via LoRa, NB-IoT, and CAT.1. When geomagnetic and radar detection is affected by heavy rain and water accumulation, the photosensitive sensor ensures that the three-mode detector maintains consistently good detection efficiency.