Feature: 1. The product has a large display screen, which can display real‑time temperature and humidity values and other data. 2. High‑accuracy temperature and humidity sensor for accurate temperature and humidity measurement. 3. It is mostly used in cold storage, breeding incubator, warehouse, laboratory, greenhouse, server, computer room, etc. 4. High‑quality chips, upgraded configuration, outstanding performance, comprehensive monitoring of various environments. 5. WiFi signal transmission, mobile phone real‑time monitoring, easy operation, complete functions. Specification: Item Type: Temperature Humidity Sensor Material: ABS Color: As shown in the picture Size: Approx.122x102x36mm / 4.8x4.0x1.4in Weight: Approx.336g/11.9oz Application: Comprehensive monitoring of various environments, mostly used in cold storage/breeding hatching/warehouse/lab greenhouse, server room, etc. Measuring Range: -40-80 (℃) DC Power Supply: DC 10-30V Record Points Number: 65535 Device Storage Interval: 1-1999 minutes can be set, the default is 30 minutes How to Use Wiring, start-up, measurement, monitoring, data storage (refer to the manual for details). Package List: 1 x Recorder 1 x Configuration Line1 x Instruction Manual1 x Bag of Installation Accessories(8pcs) Note: 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.