... systemeas sensor, eas antenna, eas gateRF systemRF sensor, RF gate, RF antennaTx Rx system8.2MHz system Advantage: 1. Patent No:201030272076.22. First ... , to avoid debugging Feature:1. Compatible with RF 7.2M, 8.2M and 9.5M system 2. Modulation frequency: 180Hz, 170Hz, 160Hz ...