PCB Board Size: Approx. 7.4 x 3.4cm / 2.91 x 1.34in. If you do not receive our reply within 48 hours, pls. If you are satisfied with our service, pls. Simple Using: Externally expand 3 channels of VCC, GND, enables power on reset and button reset, and the externally expand 1 channel of led lights, simplifies debug and use.
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