... far more superior to analog line 4.anti-theft Transmitter Technical Instruction 1. Main technical parameters: Input DC ... for adjustment, firstly disconnects the P5 terminal antenna on transmitter panel, set the JP1 on 1&2. Connect ... 150, 160, 170 and 180Hz, to let each transmitter have different modulation frequency, so as to avoid interference ... than 10M. TEC-520 Access Control Products EAS RF System