1、High density abs shell material, which is durable and solid. 2、Easy installation, wall-mounted type, convenient to use. Exquisite appearance, mounting screws on both sides. 3、Standard rail structure design: also can be install onto indoor wall and ceiling. 4、High precision and high quality probe, ensuring wide range of monitoring temperature and humidity. 5、Low-power consumpation, widely used in office, warehouse, workshop, museum, machine room and other indoor nonextreme environment. Features: High density abs shell material, which is durable and solid.  Easy installation, wall-mounted type, convenient to use. Exquisite appearance, mounting screws on both sides. Standard rail structure design: also can be install onto indoor wall and ceiling.  High precision and high quality probe, ensuring wide range of monitoring temperature and humidity.  Low-power consumpation, widely used in office, warehouse, workshop, museum, machine room and other indoor nonextreme environment.  Specification: Item Type: Humidity Temperature Sensor Material: ABS DC power supply: 12v-24v DC Maximum power consumption: 0.4w Output signal :RS485 output Response time: ≤15S(1m/s wind speed) Temperature stability for a long time: ≤ 0.1 ℃ / year Long-term stability of humidity: ≤1%y Temperature range: -40 ℃-80 ℃ Humidity range: 0-100%RH The temperature resolution: 0.1 ℃ Humidity resolution: 0.1%RH Power consumption: ≤ 0.15 W (@ 12 v DC, 25 ℃) Working pressure range: 0.9- 1.1 ATM Size: approx.85*46mm/ 3.4* 1.8in(L*W) Package list: 1 x Humidity Temperature Sensor