1?��50cm Extension Cord: The temperature and humidity switch probe has a 50cm long power cord, so that your use is no longer restricted by distance. 2?��High Accuracy: ?��3%RH high accuracy error detection, bring you all the time monitoring by connecting the on?off device (not included). 3?��Wide Application: Suitable for plants, greenhouse soil temperature detection, fish tank pond breeding water temperature monitoring, etc. 4?��Powerful Function: By accurately monitoring the soil temperature or the water temperature in fish tank, your animals and plants can grow better. 5?��High Quality Material: The temperature controller probe is made of stainless steel, which is waterproof and moisture?proof, not easy to rust, has a longer service life.