Features Parameters: All-in-one USB data logger with large storage capacity, up to 10,000 temperature points and 10,000 humidity points. Use: Easy to operate, plug and play, no cable or card reader required, USB connector can quickly connect to PC to download data. Flexible: Powerful LED indications provide all key information including recordings. Alarm status, temperature statistics (°C/°F), etc. Application: On-line configuration without software, without installing any software, for an ultra-fast, easy-to-configure data logger. Maintenance: Lightweight and compact, easy to carry and store, the device should be stored at a recommended humidity of 20 to 60% RH and a temperature of 10 to 50 °C. Specifications: Condition:100% Brand New Color: As shown in the picture How to use: single use Accuracy: ±0.5°C (-20°C~+40°C); out of range, ±1°C Data capacity: 10000  Alarm temperature range: <2°C or >8°C (<35.6°F or >46.4°F) Delayed record: 30 minutes Working environment temperature: -30 ° C ~ +70 ° C Instructions for use: 1. Press and hold the "Start/Stop" button for more than 3 seconds, the "OK" indicator will be on for 3 seconds, indicating that the device starts recording, and then you can place the device in the environment you need to monitor. 2. During the recording process, the device will automatically light every 10s. If the normal indicator (green light) is lit every 10s, it means that the device is not over temperature during the recording process. If the alarm indicator (ie red light) is bright every 10s Once, it indicates that over-temperature has occurred during the recording process. Note: As long as over-temperature is found during the recording process, the green light will no longer illuminate. 3. Press and hold the "Start/Stop" button for more than 3s, the alarm indicator (ie red light) will be on for 3s, indicating that the device stops recording. The recording will also stop automatically when the device is full. After the device stops recording, it will not automatically flash. If the device is over-temperature during recording, press the "Start/Stop" button. If the normal indicator (green light) is on, it indicates that the temperature is not over-recorded during the recording; if the alarm is When the indicator light (ie red light) is on, it indicates that the temperature is over temperature during recording. 4. Remove the waterproof packaging bag and insert the device into the computer USB interface. Package List: 1*Temperature and Humidity Logger Package List