Product Description

This product is a buzzer expansion board, with pins corresponding to the D1 mini development board.

Product Parameters

(1) Supply voltage: DC5V

(2) Buzzer frequency: 1KHZ-3KHZ

(3) Buzzer high-level trigger is effective: 3.3V/5V

Product Functions

Operating instructions:

① You can choose any of the ports D5, D6, D7, D8 to connect to port 3 3V/5V high level

② Short circuit the solder pads next to the port to be used

③ Connect the wires as shown in the diagram. After triggering a high level, the buzzer will emit a sound

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Official Certificate&Certificate

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Company office environment

Warehouse Real Shot

Standard packaging

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