The smartwatch SMA-WATCH-M2, which works as a GPS tracker via SIM card, is designed to protect children and give parents a secure feeling. However,…
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The smartwatch SMA-WATCH-M2, which works as a GPS tracker via SIM card, is designed to protect children and give parents a secure feeling. However,…
ITEAD from Shenzhen (China) sells a series of ESP8266-based smart home products under the Sonoff brand, which is enjoying increasing popularity in the hobbyist…