New in bulk packaging. The item may have slight surface scratches due to transportation and storage; please understand. Avoid pointing the radar antenna directly toward large metal equipment, rotating fans, or pipes. When installing multiple radar alarms, ensure the antennas of each radar module are parallel, avoid direct antenna-to-antenna alignment, and maintain a minimum distance of 1 meter between modules. Radar sensing device suitable for outdoor use. The receiver can connect up to 10 radars and communicate within a range of 50100 meters in open areas. Adjustable alarm modes including vibration and buzzer alerts. IPX7 waterproof rating, long battery life, and enhanced durability. Professional anti-theft equipmentinstallation by qualified personnel is required to ensure proper operation, maintenance, and repair. Parameters: Product size: 4 x 4 x 7 cm Working voltage: 3.7 V Radar frequency: 5.8 GHz Wireless distance: 50100 m (open area) Includes items as shown in product images