Data Sheet

5
Description
The Crowtail- Buzzer module is a piezo buzzer which can be connected to digital outputs, and will
emit a tone when the output is HIGH.
5. Crowtail- Relay
Description
The Crowtail- Relay module is a digital normally-open switch. Through it, you can control circuit
of high voltage with low voltage, say 5V on the controller.
6.Crowtail- Moisture Sensor
Description
This Moisture Sensor can be used to detect the moisture of soil or your pet plant's water level, let
the plants in your garden reach out for human help. It is connected to Analog I/O port.