SPECIFICATIONS

Application Scenarios: Civilian Grade 

Battery Included: no

Brand Name: HoldPeak

Choice: yes

DIY Supplies: TiLing

Gas Type: Co2

High-concerned chemical: none

Is Smart Device: no

Model Number: HZ18M

Origin: Mainland China

PCBincluded: Yes

Semi-finishedproduct: No

With LCD Screen Or Not: Yes

semi_Choice: yes

3-in-1 CO2 Monitor Air Quality Detector 10000ppm High Accuracy NDIR Sensor Temperature Humidity Tester USB Data Logger

This 3-in-1 air quality monitor integrates high-precision CO₂ detection, temperature, and humidity monitoring in one ultra-compact device. Using a professional NDIR (Non-Dispersive Infrared) CO₂ sensor with ±50ppm ±5% accuracy across 400~10,000ppm, it delivers lab-grade air quality data without the bulk. Ideal for homeowners monitoring bedroom CO₂ levels, greenhouse operators optimizing growing conditions, office safety officers ensuring proper ventilation, and parents keeping nurseries safe. Simply power on — no WiFi, no app, no complicated setup.

Specification:

CO₂: 400–10,000 ppm (±50ppm + 5% reading) | NDIR Infrared Sensor | ≤3s

Temperature: –20~60°C (±1°C) | Digital Sensor | ≤1s

Humidity: 0–100% RH (±2% RH typical) | Digital Sensor | ≤1s

Data Storage: 10,000 Groups | TYPE-C USB Export to PC

Alarm: Adjustable Upper/Lower Limits | 3-Level Volume | Customizable Recording Interval

Display: 1.8-inch TFT Color Screen | Real-Time Monitoring

Battery: 3.7V Rechargeable Polymer Lithium | Type-C Fast Charging | 2–3 Hours Full Charge

Weight: 125g | Dimensions: 70×75×29 mm | Built-in LED Flashlight

【NDIR CO₂ Sensor with ±50ppm Accuracy — Lab-Grade Precision in Your Pocket】
Most budget CO₂ monitors use VOC-based estimation algorithms that confuse CO₂ with other gases, producing unreliable readings. This device uses a genuine NDIR (Non-Dispersive Infrared) sensor — the same technology found in professional air quality instruments — delivering ±50ppm ±5% accuracy across 400~10,000ppm. Whether you are checking if a meeting room has adequate ventilation or monitoring a nursery overnight, you get data you can actually trust.

【10,000 Groups Data Logging with USB Export — Turn Raw Numbers into Actionable Insights】
Built-in memory automatically stores up to 10,000 timestamped data sets. Connect to any computer via the included TYPE-C USB cable, export the records as a document, and analyze long-term CO₂ trends. Ideal for greenhouse operators optimizing plant growth cycles, facility managers documenting indoor air quality for compliance, or homeowners tracking bedroom CO₂ buildup patterns over weeks.

【Full Alarm Customization — Adapts to Every Environment, Not the Other Way Around】
Set your own upper and lower alarm thresholds, choose from 3 volume levels, and define custom recording intervals. A bedroom needs quiet, low-sensitivity alerts; a greenhouse needs precise, frequent sampling; a crowded office needs a loud warning when CO₂ exceeds 1000ppm. This monitor adjusts to your scenario — not a one-size-fits-all factory preset that either cries wolf or stays silent when it matters.

【125g Ultra-Lightweight + Built-in LED Flashlight — Anywhere, Anytime, Even in the Dark】
At just 125g and 70×75×29mm, it fits in one hand and slips into any bag or glove compartment. The built-in LED flashlight is a practical touch that no ordinary air monitor offers — perfect for reading measurements in dark basements, grow rooms, server rooms, or vehicle cabins at night. Portable enough to carry between rooms, durable enough for daily use.

【Type-C Fast Charging, 2-3 Hours Full — Ready When You Need It】
Powered by a rechargeable 3.7V polymer lithium battery with Type-C fast charging. A full charge takes just 2–3 hours, eliminating the cost and hassle of disposable batteries. The 1.8-inch TFT color screen displays CO₂, temperature, and humidity simultaneously with crisp, easy-to-read graphics. Unbox, charge, turn on — that is all the setup required.