Feature : 1. DURABLE MATERIAL: Made of high-quality ABS material, compact, lightweight, shockproof and durable. 2. DOES NOT REQUIRE BATTERIES: This product can indicate the temperature and humidity of the measured environment, without power, maintenance and calculation, which is energy-saving and environmentally friendly. 3. CLEAR TO READING: The classic style of the dial is simple and generous, and the clear scale makes it easy to read so you can use it with confidence. 4. EASY TO INSTALL: With a foldable bracket, you can put it on the tester or hang it on the wall to meet your different needs. 5. Widely used: Widely used in temperature and humidity measurement in scientific research, production workshops, computer rooms, libraries, archives, warehouses and room environments. Specification : Item Type: Temperature Humidity Tester Model: G101 Material: ABS Application: Temperature and humidity measurement Temperature measurement range: -20 50 Humidity measurement range: 10% 100% RH Temperature error: 1 (10-32 ), 2 Humidity error: 5% RH (50% 99% RH), 7% RH (25% 40% RH), 9% RH Package List : 1 x Temperature Humidity Tester note : Do not use in high temperature places 1. Unpack the product 2. Choose an installation location and install