Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

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By krzychb
#35336 According to spec this particular module should be powered with 5VDC (connected to DC+ and DC- inputs).
Basing on https://learn.sparkfun.com/tutorials/lo ... gic-levels and https://learn.sparkfun.com/tutorials/lo ... gic-levels you should be able control this module from ESP8266 with 3.3V logic (connected to IN input).
Does it clarify your concern?
Krzysztof