How to use: 1. and hold the "start/stop" button for more than 3s, the "OK" indicator be on for 3s, indicating the device starts recording, and then you can place the device in the environment you need to control. 2. During the recording process, the device automatically turn on the light every 10s. If the normal light (green light) is on every 10s, it means that the device does not overheat during the recording process. If the alarm indicator light (. red light) illuminates every 10 seconds, explain that excessive temperature occurred during the recording process. Note: If overheating is detected during the recording process, the green light no longer be illuminated. 3. and hold the start/stop button for more than 3s, the alarm indicator (. red light) be on for 3s, indicating that the device stop recording. Recording also stop automatically when the device is full. After the device stops recording, it not flash automatically. If the device overheats during recording, the start/stop button. If the normal indicator (green light) is on, it means that the temperature is not overwritten during recording; If there is an alarm when the indicator light (. red light) is on, it means that the temperature is overheating while recording. Remove the waterproof packaging bag and insert the device into the computer's USB interface. During the process of creating PDF files, the normal indicator light (. green light) and the alarm indicator light (. red light) turn on. When the file is generated, the normal light (. green light) be on until the logger is removed from the computer. After finishing the recording, you can directly insert the computer to get the PDF report. Built-in USB connector, directly connect to PC or mobile phone, no cable or reader needed. With0.5C high precision and high sensitivity. It has a small and compact size, easy to carry. Wide choice of temperature measurement, it can store 10,000 data. Condition: Item Type: Temperature Recorder Size: .67x28mm/2.64x1.1in (L x W) Weight: .78g/3oz Type: Single use Recording interval: 10 minutes Accuracy: 0.5(-20~+40) Range: 1 Data capacity: 10000 Alarm temperature range: Less than 2 or 8(Less than 35.6 or 46.4) Start delay: 30 minutes Working environment temperature: -30~+60 Reminder: Do not disassemble the package. Before testing Turn on the device, the start button, and the light be on for 10 seconds, indicating that the product is good, and it start recording after 30 minutes of power on (do not the stop button and do not connect the computer, the stop button (do not the stop button if you don't want to record) and connect the computer, this product can no longer be used after one time. color:As shown Material:plastic Package Contents: 6 x Temperature Analyzer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.