4 relay output output serial and RS-232 serial control port Buyer and Importer from Portugal - Buying Lead

4 relay output output serial and RS-232 serial control port GSM Wireless relay switch control

Hi, I would like to know the price for GSM relay switch controller SMS texts for switching relay with dialling-in remote control RTU5010. I am interested in buying 15 Pieces. price FOB Please provth a quotation. Thank you.

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