Item Type: Data Logger Material: Plastic Color: As Pictures Shown Outline Size: Approx. 67x28x5.5mm/2.6x1.1x0.2in Weight: Approx. 12g/0.4oz Battery: Button Battery Use-Pattern: Single Use Record Interval: 5 Minutes (30 Days), 10 Minutes (60 Days), 15 Minutes (90 Days), Optional Accuracy: 0.5(-20~+40) Beyond the Range, 1 Data Capacity: 10000 Alarm Temperature Range: 8( 46.4H) Delayed Record: 30 Minutes Working Environment Temperature: -30-+60 Instructions for use: Press and hold the Start/Stop button for more than 3 seconds, and the OK indicator will be on for 3 seconds, indicating that the device has started recording. Then you can place the device in the environment you need to monitor. The device will automatically light up every 10s during the recording process. If the normal indicator light (ie green light) lights up once every 10s, it means that the device has not over-temperature during the recording process. If the alarm indicator light (ie red light) lights up every 10s, It means that over-temperature occurred during recording. Note: As long as over-temperature is found during recording, the green light will no longer be on. Long press the Start/Stop button for more than 3s, the alarm indicator (ie red light) will be on for 3s, indicating that the device has stopped recording. After the device is full of data, it will automatically stop recording. After the device stops recording, it will no longer flash automatically. To check whether the device is over-temperature during the recording process, you can short press the Start/Stop button. If the normal indicator light (green light) is on, it means that the temperature is not over-temperature during the recording process The indicator light (that is, the red light) is on, it means that the temperature is over during the recording process. Tear off the waterproof packaging bag and insert the device into the USB port of the computer. During the PDF file generation process, the normal indicator ( green light) and alarm indicator (red light) will turn on. When the file is generated, the normal indicator (green light) It will stay on until the recorder is removed from the computer.1Rapid measurement, 3?gear interval time. Large data capacity and high accuracy. 2Large temperature span in working environment and wide range of use. 3Small size, light weight, the single used data logger is ideal for monitoring the temperature of shipments in transportation. 4Built?in USB connector, there is no cable is required or needed to download and manage data. 5Widely used in supermarkets, freight, customs, cold storage, food, wet markets etc. 1 x&nbspData&nbspLogger