Material: metal
Net weight: 7g
Model: -28
Main color: blue
Operating voltage: 3.3V~5V; Dual output mode, more accurate analog output; One bolt hole for easy installation

With power indicator (red) and digital switching output indicator (green)

br/>Features an LM393 comparator, stable
PCB panel dimensions: approximately 3 cm x 1.5 cm
Soil probe dimensions: approximately 6 cm x 3 cm
Cable length: approximately 21 cm
Interface description (4 wires):
VCC: 3.3V-5V
GND: GND
DO: digital output interface (0 and 1)
AO: analog output interface
Instructions for use:
The soil humidity module is most sensitive to humidity and is generally used to detect the moisture content of the soil
The module to reach the threshold is set in the soil humidity, the DO port output is high, when the soil humidity exceeds a set threshold, the module D0 output is low
The digital output D0 can be directly connected to the microcontroller to detect the high and low of the microcontroller to detect soil humidity
The digital outputs of the module's DO store relay can directly drive the buzzer module, which can form soil humidity alarm equipment
AO analog output and AD module connected through the AD converter, you can get more accurate humidity values from the soil

Package content: 1 x Soil Hygrometer Detection Module
Note: Random color, do not accept the specified color.

Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.