Designed to monitor and set temperature and humidity, simple and useful. Can work with temperature & humidity monitoring switch, can detect the real-time temperature & humidity of the environment. with waterproof, moisture-proof and anti-rust with the high-quality stainless steel tube encapsulated. Perfect and cost-effective monitoring sensor for your DIY smart home. No other components, unique single bus interface. Specifications Power: DC3.1-5.5V. Working temperature: -40-+80 degree. Operating Temperature Range: -55C- +125C. PLS NOTE: this waterproof probe can only measure the temperature, but not measure humidity. size: 1 M Material: Plastic colour: As Shown Package Contents: 1 x Waterproof probe Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.