1、Made from premium abs material, which is solid, durable to use. 2、The transmitter can be used in cold storage monitoring/high-temperature and high-humidity environment/high-strength interference/laboratory and other places 3、High sensitivity, fine workmanship, waterproof and moisture-proof. High quality probe, safe and reliable. IP67 protection grade is suitable for harsh working environment, also suitable for rain and snow, damp, dust.​ 4、The pipe type temperature and humidity sensor adopts stainless steel filter net, which can not only filter out dust, but also ensure air circulation. 5、The 20um high-density hole plays a buffer role for the high-speed air flow in the pipe, so as to ensure the accuracy of temperature and humidity measurement data. Features:  1. Made from premium abs material, which is solid, durable to use. 2. The transmitter can be used in cold storage monitoring/high-temperature and high-humidity environment/high-strength interference/laboratory and other places.  3. High sensitivity, fine workmanship, waterproof and moisture-proof. High quality probe, safe and reliable. IP67 protection grade is suitable for harsh working environment, also suitable for rain and snow, damp, dust. 4. The pipe type temperature and humidity sensor adopts stainless steel filter net, which can not only filter out dust, but also ensure air circulation.  5. The 20um high-density hole plays a buffer role for the high-speed air flow in the pipe, so as to ensure the accuracy of temperature and humidity measurement data.  Specification: Material: ABS Application: temperature and humidity transmitter DC power supply: 12v-24v DC Maximum power consumption: 0.4w Output signal: RS485 Response time: ＜155(1m/s wind speed) Long-term stable temperature: ≤ 0.C/year Long-term stability of humidity: ≤  1%y Temperature range (RS485): -40 ° C~80 ° C Temperature range (analogue): 45 ° C ~115 ° C (default)/to 15 ° C~ 65 ° C Humidity range: 0-100%RH The temperature resolution: 0.1 ° C Humidity resolution: 0.1%RH Height: 23.4/ 9.2in Note:  1. When wire drawing 485, please note that the two lines of AB cannot be connected in reverse, and the address between multiple devices on the device cannot conflict. 2. The display different trifle color difference is the normal phenomenon.