... 8m Frequency: 8.2MHz Power supply: 220V/AC Power:less than 15W 8.2MHZ EAS RF door,EAS alarm ... customer can use it for a long time;4. A strong ablity to anti-inference, less misstatements, low energy consumption ... base. It is simple and durable,6. It is suitable for all of 8.2MHz RF system.Parameter:Detecting distance: 0. ... be designed into DSP system EAS RF System, for shop security, supermarkets door