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5V 7 28V 8 Channels Bluetooth Relay Module Development Board Dual USB 5V 1A 2.1A Mobile Power Bank with PCB Power Module LCD The 5 ATM rating indicates The 5 ATM rating indicates the device can withstand water immersion up to 50 meters depth and is safe for lap swimming Experienced programmers can immediately leverage advanced features including interrupt handlers 5V 7 28V 8 Channels Bluetooth Relay Module Development Board The ESP8266 eight way relay development board is equipped with an ESP 12F WiFi module and supports DC7 28V 5V power supply
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