4. The soil moisture sensors should be connected according to the
markings: the sensor placed in CH1 (mark on the enclosure) should be
inserted into the connectors marked „1” on the PCB etc.
Press the spring contact and insert the appropriate wire into the
corresponding slot in the connector:
brown wire (GND) - selected channel marked with „-” symbol
green wire (OUT) - selected channel marked with „+” symbol
Connect the white cable (VCC) to the 3,3 V socket.
Tighten the cable gland to immobilize the external sensor wires
and maintain tightness.
3
2
7. The accuracy of the reading depends on the correct installation of
the sensor in soil. Depending on the needs there are several
possibilities of sensor installation.
Pictures A,B,C: the measuring probes can be completely buried and
can be placed at different depths in the soil. Soil moisture can be
measured with one, two or three sensors.
It is also possible to place the sensors without burying them as in
picture D.
A
B
C
D
5. Place three AA batteries in the device.
6. Assemble the device and screw it back together.
