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if you are asking which number you should call to access your, whatever is the number of the sim you put in the gsm module.if you want to know how to set the car to only answer calls from a specific phone, please see a GSM800 instruction sheet. you can extract the number. and add a code fragment to do so before the answering code.
Mobile Phone StandView Instructable »
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Bare Minimum Raspberry Pi Torrent Machine TutorialView Instructable »
DTMF Controlled Car. No Mobile Phones Required
Sir, di this circuit have the capability to withstand a lightning. A lighting strike can fray the device right??
DTMF Controlled Car. No Mobile Phones RequiredView Instructable »
DTMF and GSM Based Home AutomationView Instructable »
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