King Pigeon GSM Alarm Co.,Ltd

GSM Temperature Alarm,SMS Temperature Alarm,Temperature SMS Alarm,Temperature Alarm,Remote Temperature Alert, Manufacturer and Supplier - China(CN)

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  • GSM 3G Relay GSM Switch GSM Gate Opener
    GSM 3G Relay GSM Switch GSM Gate Opener

    Price : $6 USD

    Description : 1.GSM Frequency: 850/900/1800/1900Mhz ,3G Frequency:850/1900Mhz,900/2100Mhz,850/2100Mhz(Optional),can work in the worldwide GSM/3G Networks; 2.No call charges. the GSM Relay rejects the call from authorized number then carries out the turn ON/OFF action on