Soil moisture relay module soil moisture sensor Arduino Robotics [water Pull]

Description

1 This is a simple moisture sensor can be used to detect the moisture of the soil, when the soil is dry, the relay off, relay and vice versa. Using this sensor make an automatic watering system, so that your garden plants no need people to manage.

2 adjustable sensitivity.
4 Operating Voltage 3.3V-5V
5 relay outputs to control more convenient.
6 with fixed bolt hole for easy installation
7 small PCB board size: 3cm * 1.6cm
8 power indicator (red) and the relay and light (green)
9 using LM393 comparator chip, stable


Two small board interface specification (2-wire)
1 VCC external 5V
2 GND External GND

Instructions for use

A soil humidity module is the most sensitive to the environment humidity, usually used to detect soil moisture.

When the modules in the soil humidity do not reach the setting threshold, the state of the relay is in the off state, the output terminal as follows: normally open and public off, normally closed and common conduction;

When soil moisture exceeds a set threshold, the state of the relay in the suction state,

Output terminal performance: normally open and public conduction, normally closed and public disconnect, users can embed on this principle to use in their own systems. Relay wiring parameters which are as follows: maximum AC voltage 250V, AC current maximum 10A, maximum DC voltage of 30V, 10A DC current maximum