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I am developer and need to send command to tracker device which is TMT250, I am trying but unable to fix it, When I send a command to tracker I get no response. Also I'm trying to use herclues utility but finding no way to move forward. Can anybody please help me out to fix this.

Thanks in advance.

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Please post your questions regarding TMT devices in separate SAS group forum.
Thank you for your understanding.
Here is the link:

But regarding Your question, I would like to note that commands have to be encoded in Codec12 ( Codec8 protocol is used by device to send messages to the server.

Best Regards

Thank you for your response.

Yes Thank you I am sending command in codec 12 , still I get no response. leme ask from the link you mentioned above thanks