... 180Hz on the panel of T04 transmitter EAS System TEC-506 EAS System Security Anti-Alarm System TEC-506 Transmitter Technical Instruction1. Main technical ... frequency), T04 receiver does not need adjustment.4. Sound/light alarm device If JP2 setting is 1&2 (factory setting), sound ... and last for 2 seconds, then the sound alarm stops, but light alarm continues to twinkle for 3 seconds. 5. Installation ...