Features 1、The recording interval, alarm interval, alarm delay, timing start and stop, button sound, upper and lower limits of temperature and humidity can be modified through the software. 2、The recorder and the computer are connected through a USB cable. The software automatically reads all the data in the device and generates a data curve graph. The software has the functions of storing, querying, and exporting data and supports multiple formats for export. 3、The recorder is equipped with a high‑accuracy temperature and humidity sensor for accurate temperature and humidity measurement. Fully charged once, recorded once every 10 minutes, can work continuously for one year. 4、This recorder has a large LCD screen, which can display real‑time temperature and humidity values, limit temperature and humidity values and ℃/℉ temperature units can be freely selected. 5、Built‑in buzzer, with over‑limit alarm function, can automatically change the frequency of recording alarms to ensure that the recorded data truly reflects changes in the environment. Specification Item Type: Temperature and Humidity Logger Material: ABS Size: Approx.120x113x33mm / 4.72x4.45x1.30in Application: It is widely used in every link of family housing, computer room, workshop, storage, drug store, laboratory, library, office, logistics cold chain and other places to monitor and record environmental temperature and humidity. Equipment Power Supply: DC5V power supply or battery power supply Battery: 1 x 18650 battery 2500mAh (not included) Recording Interval: 5s-18h Measurement Update: 2-255 seconds can be set Battery Life: The equipment can work continuously for 1 year once it is full charged Maximum Battery Cycle Charge And Discharge Times: 1200 times Measuring Temperature Range: -40-80°C (-40℉~180℉) Measuring Humidity Range: 0-100%RH Measurement Accuracy: ±0.1℃ (25℃) typical value (temperature) ±1.5%RH (5~95%RH, 25℃) typical value (humidity) Package List 1 x Temperature and Humidity Logger(Battery Not Included) 1 x External Sensor 1 x Sensor Bracket 1 x Data Cable 2 x Sticker