Features: The USB Hygrometer is a essential tool for precise environmental monitoring, featuring a external probe and secondary development capabilities. This device ensures real time temperature and humidity track with email alarm notifications, offering both internal and external sensors accuracy for comprehensive data analysis. For warehouse managers, logistics professionals, and business owners who require remote monitoring of storage conditions to maintain product quality. This USB hygrometer excels in various setting such as warehouse, freight centers, and logistic storage facilities, ensuring environmental conditions are maintained. Enhances your automation toolkit with the advanced features, including data logging, and a 3.5mm port for integration with all PC sensors temperature sensors. Specifications: Material: Plastic Temperature Measurement: 1: -40 to 85℃ (Without Probe) 2: -40 to 85℃, -40 to 125℃(Probe) 3: -40 to 85℃, -40 to 125℃(Probe) 4: -40 to 85℃, -40 to 123.8℃(Probe) Humidity Measurement: 0-100RH% Voltage: 5V Size: About. 58x18x11mm/2.3x0.7x0.4in Pattern: 1/2/3/4 Package Includes: 1 Set USB Temperature Humidity Meter note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.