Feature: 1. RS485 communication, communication address and baud rate can be set, the longest distance is 2000 meters. 2. Built‑in buzzer, when the temperature and humidity exceed the limit value, it will automatically sound and light alarm. 3. Has a failure rate much lower than the industry average. After construction and installation, the equipment is durable and has a low failure rate. 4. Convenient to use and with good performance, with small size, easy to carry and store. 5. Strict quality control and quality assurance, high safety factor, can be used with peace of mind. Specification: Item Type: Temperature and Humidity TransmitterMaterial: ABS Uses: Widely used in 24 hours monitoring of temperature and humidity data in environments such as cold chain logistics, food and medicine, biological products, special storage, electronic chemicals, server rooms and scientific research laboratories. DC Power Supply (default): DC 10-30V Maximum Power Consumption: 0.4W Measurement Accuracy: Temperature ±3%RH (5%RH-95%RH, 25℃); humidity ±0.5℃ (25℃) Probe Working Temperature: -40℃~+80℃ Probe Working Humidity: 0%RH-100%RH Temperature Display Resolution: 0.1℃ Humidity Display Resolution: 0.1%RH Rate Temperature And Humidity Refresh Time: 1s Long-term Stability: Humidity≤%RH/Y; temperature≤0.1℃/Y Response Time: Humidity ≤ 4s (1m/s wind speed); temperature ≤ 15s (1m/s wind speed) Output Signal: RS485 signal Parameter Setting: Set by softwareSize: Approx. 86mm / 3.4in26mm / 1in . Package List: 1 x Transmitter1 x Screw Pack