... is debugging-free type, its operation is simple... EAS Supermarket Anti-theft door TEC-506 Transmitter Technical Instruction1. Main technical parameters: Input ... modulation signals of 150, 160, 170, 180Hz on the panel of T04 transmitter, which can be selected for using, especially ... for selection. If to change the modulation signal on the panel of transmitter, it needs to regulate the frequency sweep ...