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 RF system , EAs system , EAS antenna 1. Material : Plastic Alluminum 2. Frequency : 8.2MHZ 3. Workvoltage : 24V/DC 4. Size : 153*41*7.5cm 5. Package : RX + TX + Power 6. PCB : MCU/DSP 7. Packing : Two antennas in a carton , 14kg/carton 8. Carton Size : 158*44*17cm