Arduino hygrometer module
$6.56
Arduino hygrometer (humidity sensor)
1 When soil is dry the module outputs a high level. Can be used to develop a maintenance free garden project.
2 Adjustable sensitivity ( shown in blue digital potentiometer adjustment )
4 Operating Voltage 3.3V-5V
5 Module Dual Output mode , a simple digital output , analog output more accurate.
6 Bolt hole for easy installation
7 Small PCB board size : 3cm * 1.6cm
8 Power indicator ( red ) and the digital switch output indicator ( green )
9 LM393 comparator chip
VCC= external 3.3V-5V
GND= GND External
DO= small board digital output interfaces ( 0 and 1 )
AO= small board analog output interface
FREE shipping from China warehouse 2-3 weeks to the US
Europe and rest of the world 3-4 weeks.
