Holdpeak HP-531G Portable CO2 Detector – 3-in-1 Air Quality Monitor

Ultra-Precise Detection
High-accuracy NDIR CO2 sensor measures 400–5000 ppm with ±50 ppm deviation, ensuring reliable air quality assessment for homes, offices, and labs.
Multi-Functional Display
Real-time monitoring of CO2 levels, temperature (0–50°C), and humidity (20–95% RH) on a crisp LCD screen with backlight for low-light environments.
Smart Alarm & Data Logging
Customizable audible/visual alarms trigger when CO2 exceeds safe thresholds. Stores 24 hours of data for trend analysis—ideal for HVAC maintenance or indoor agriculture.
Portable & Durable Design
Lightweight ABS housing with anti-slip texture and compact size (110 x 55 x 30 mm) fits in pockets. Rechargeable 1000mAh battery lasts 8–10 hours.
Pro-Grade Applications
Perfect for schools, greenhouses, gyms, and industrial sites requiring ventilation checks or compliance with health standards.
Plug-and-Play Efficiency
Includes USB-C charging and a lanyard for hands-free use—no setup needed. Ships with calibration certificate for immediate accuracy.
Bulk Order Advantage
Direct factory pricing for wholesalers—lowest global rates with guaranteed stock for large-scale procurement.