When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Soil humidity sensor. It is use for detecting soil humidity. Take "Thermal Sensor" as example, if defaults 25 Celsius trigger, DO output low level is valid; After clockwise adjusting, that is when the temperature is lower than 25 Celsius, it can trigger; if counter clockwise adjusting, then higher than 25 Celsius can trigger.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.