TR-73U has a total of three channels: one temperature, one humidity, and one barometric pressure channel. These compact, lightweight models are designed for low energy consumption for longer battery life; coupled with its easy-to-use software and USB connection makes this series the foundation of our Thermo Recorder line. The product is an all-in-one package that includes the data logger unit, sensor and software. Simply by connecting to a computer and carrying out a few easy steps, the measurement and recording of data can be started. Functions USB Connection One Year Continual Use on One Set of Batteries Simultaneous Monitoring of Multiple Channels of Data High Speed Data Transfer Large Data Capacity: 8,000 Readings X 2 Channels Adjustment Function Accurate, Compact, Lightweight and Affordable Easy to Read Multi-Functional Display TR-71U TR-72U TR-73U Measurement Channel 2 Channel 2 Channel 3 Channel Measurement Item Temperature Only Temperature Humidity Temperature Humidity Barometric Pressure Internal Temperature Sensor -10 to 60°C -10 to 60°C -10 to 60°C Internal Barometric Pressure Sensor - - 750 to 1100 hPa External Temperature Sensor -40 to 110°C 0 to 50°C 0 to 50°C External Humidity Sensor - 10 to 95%RH 10 to 95%RH Option Sensor -60 to 155°C *1 -40 to 110°C -40 to 110°C Temperature Measurement Accuracy (Standard Sensor) Average ±0.3°C(-20 to 80°C) Average ±0.5°C(-40 to-20/80 to 110°C) Average ±0.3°C(0 to 50°C) Humidity Measurement Accuracy (Standard Sensor) - ±5%RH (At 25°C 50%RH) Barometric Pressure Measurement Accuracy - - ±1.5hPa Temperature Measurement Resolution Display 0.1°C Humidity Measurement Resolution Display - 1%RH Barometric Pressure Measurement Resolution Display - - 0.1hPa Temperature Sensor Thermistor
