Main details of supermarket security sensor : 1 High standard& high hardness imported ABS plastic material. Resistant to high temperature& high pressure; novel material, good and simple look. 2 Transmit-receive convergence, normal operation by single antenna; DSP technology, self-tuning circuit; zero false positives.self-regulating synchronization ; Unique sound and light alarm; Can detect all the 58kHz soft label ,hard tags and special 58kHz tags. 3 Ultra-high-speed digital signal processing technology, unsurpassable in stability of anti-theft monitoring and long service life compared with domestic products; 4 Advanced digital signal processing technology can conduct periodic self-monitor and automatic gain control to surrounding environment, without requiring manual shift