GSM GPRS Modbus Control 4-20mA Sensor 4DI 8AI 2 Relay Output RS232 RS485
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GSM GPRS Modbus Control 4-20mA Sensor 4DI 8AI 2 Relay Output RS232 RS485 Support 3G WCDMA /4G LTE Version (Skype: lisali1220, WhatsApp: 0086 ...
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