The dual-mode geomagnetic parking space detector IDM-ET34 is a parking lot detector based on MP-AMR (Micro-Power Geomagnetic Induction Detection) technology. It is an integrated NB-IoT/LoRa/LoRaWan wireless geomagnetic induction detector for PIS and PDS applications. Building on geomagnetic algorithms and combined with ultra-low-power radar recognition technology, it further enhances the detection accuracy of the device. Based on micro-power geomagnetic induction vehicle detection technology (MP-AMR), the fire lane detector incorporates millimeter-wave recognition technology to improve identification accuracy. It operates on battery power and features a pressure-resistant housing suitable for both indoor and outdoor Parking Information System (PIS) applications. It supports operator NB-IoT networks, including China Mobile, China Unicom, and China Telecom, with no need for gateways or relays. It offers long battery life with replaceable batteries, a wide operating temperature range, and waterproof performance. It is easy to install and debug, features self-learning capabilities, and requires no manual initialization. The housing is IP68-rated waterproof with an inner and outer shell design for easy maintenance.