Product Features:

1.Historical Data Traceback: Supports data storage and query for easy review of air quality changes, suitable for home health management or industrial environment monitoring. 

2. Long-lasting battery life: Built-in 2000mAh rechargeable lithium battery with a full charge lasting 8-12 hours, supports USB-Type-C fast charging, making outdoor use stress-free. 

3. International Compliance Certification: Passed CE, FCC, RoHS authoritative certifications, meeting Amazon / International platform listing standards, no compliance risks. 

4. Exceeded standard sound and light alarm: When the indicators exceed the threshold, it automatically triggers a sound and light reminder, promptly alerting users to take protective measures such as ventilation to ensure health and safety. 

5. Environmental-Friendly and Safe Material: Made of food-grade ABS material, odorless, anti-aging, non-toxic and harmless for long-term use, suitable for home/commercial use.