Model YM-ZC2521 adopts spectrum sensing based on Remote ID recognition, protocol analysis and radio AOA direction‑finding technology. It performs 360° omnidirectional detection over the full frequency band of 25 MHz to 6 GHz even in complex urban electromagnetic environments. It supports direction‑finding with a single unit and cross‑location with two or more units. It can locate DJI, Autel, custom‑built UAVs, WiFi drones and FPV drones. It provides 360° coverage, early warning, whitelist/blacklist, serial number identification and customizable alarm zones. It also supports trajectory playback, spectrum analysis and data capture.