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Hymeter HM-9617-5
Portable CO2 Detector, 4-in-1 Carbon Dioxide Detector for Car | Indoor CO2 Monitor with Audible & Visual Alerts, Temp/Humidity Sensor, Magnetic Back, 300H Standby for Home, RV (Black)
Only 15 left in stock - order soon.
A pocket-sized CO2 detector covering 400–5000 ppm with temperature and humidity, color-coded LEDs and an audio-visual alarm with adjustable thresholds. Its 2000 mAh battery gives up to 300 hours of standby and charges by USB-C, and a magnetic back and lanyard allow mounting on metal surfaces in a car or van. At 3.9 oz (110 g) it is one of the lighter units, suited to travel and vehicle use.
- Price
- $54.99
- Brand
- Hymeter
Prices from Amazon as of . Product prices and availability are accurate as of the date and time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of the product. As an Amazon Associate I earn from qualifying purchases.
Ranking within Category
Comparing this product to others on Nomad Gear Finder (in the carbon dioxide detectors category with a value specified):
- This product's Weight is lower than 78% of 19 others: 0.24 lbs (0.11 kg)
- This product's Width is lower than 88% of 18 others: 2.20 in. (56 mm)
Specifications
These details are subject to change and may not be current. Please check Amazon or manufacturer web site to confirm before purchase.
- Model
- HM-9617-5
- Popular brand
- No
Physical Attributes
- Weight
- 0.24 lbs
- Weight
- 0.11 kg
- Length
- 3.82 in.
- Length
- 97 mm
- Width
- 2.20 in.
- Width
- 56 mm
- Depth/Height
- 1.22 in.
- Depth/Height
- 31 mm
Features
Details from the Hymeter HM-9617-5 Amazon listing:
- 【Accurate 4-in-1 Detector】This portable carbon dioxide detector combines CO2, temperature, and humidity monitoring in one compact unit. Equipped with a high-precision sensor, it accurately detects CO2 (400–5000 PPM), temperature (14–131℉ / -10–55℃), and humidity (0–100% RH). It enables real-time air quality monitoring anywhere, and one-button °C/°F switching makes it ideal for international travelers
- 【Rechargeable Battery & USB‑C Fast Charging】This travel CO2 detector features a 2000mAh rechargeable battery with USB‑C fast charging, delivering up to 300 hours of standby time, so no frequent recharging is needed. The screen auto‑dims after 5 minutes of inactivity to save power and extend battery life, making it a reliable portable CO2 monitor for road trips, vacations, camping, and extended outdoor stays
- 【Clear Display & Smart Alarm】This carbon doxide detector delivers instant alerts through color‑coded LED indicators and audio‑visual alarm. Customizable alarm thresholds allow you to set detection ranges according to your requirements
- 【Portable & Durable Build】Travel-designed for on-the-go use, this CO2 detector is compact and lightweight (110g, 3.82"×2.2"×1.22"), easily sliding into backpacks, suitcases or jacket pockets. Attach its magnetic back to metal surfaces, or hang it with the included lanyard. Compact yet powerful, it’s the ultimate air quality monitor and travel safety essential for home, car and tent—keeping your space safe anytime, anywhere
- 【Package Included】1 × Rechargeable CO2 detector, 1 × USB Type‑C charging cable, 1 × User manual. Note: This device is not fully charged out of the box, please charge it fully before first use to maximize battery lifespan. For long‑term storage, keep the detector at 100% charge; storing it with a drained battery may cause permanent damage. Our professional customer service team is always available to assist you with any questions or concerns regarding your purchase
Similar products from other brands
Chosen for their similar specs and price:
 This productHymeter HM-9617-5 |
 Temtop C1+ |
 INKBIRDPLUS PTH-10C |
 SwitchBot Meter Pro CO2 |
|
|---|---|---|---|---|
| Price | $54.99 | $42.99 | $42.99 | $59.48 |
| Model | HM-9617-5 | C1+ | PTH-10C | Meter Pro CO2 |
| Popular brand | No | – | – | – |
| Gases detected | – | CO2 | CO2 | CO2 |
| Max. CO2 detection (ppm) | – | 5,000 | 5,000 | 9,999 |
| Min. CO2 detection (ppm) | – | 400 | 400 | 400 |
| Accuracy | – | ±(40ppm +5%) (400-2500ppm) | ±(50ppm + 5%) | ±(50 ppm + 5%) |
| Resolution (ppm) | – | 1 | – | – |
| Temperature & humidity readout | – | Yes | – | Yes |
| Sensor type | – | – | NDIR | NDIR |
| Calibration method | – | Manual fresh-air calibration (about 400 ppm, 200-second countdown) | Automatic calibration (can be turned off); manual calibration (200-second countdown in fresh air) | – |
| Data logging | – | Yes | – | Yes |
| High alarm level (ppm) | – | – | 1,500 | – |
| Adjustable alarm levels | – | – | Yes | – |
| Alarm types | – | Buzzer (optional) and color-coded CO2 indicator | Sound, color indicator lights | Sound, screen and app notifications |
| Weight (lbs) | 0.24 | 0.24 | 0.31 | 0.34 |
| Weight (kg) | 0.11 | 0.11 | 0.14 | 0.15 |
| Length (in.) | 3.82 | 3.50 | 2.99 | 3.62 |
| Length (mm) | 97 | 89 | 76 | 92 |
| Width (in.) | 2.20 | 2.70 | 2.76 | 3.11 |
| Width (mm) | 56 | 69 | 70 | 79 |
| Depth/Height (in.) | 1.22 | 0.70 | 1.18 | 0.98 |
| Depth/Height (mm) | 31 | 18 | 30 | 25 |
| Display type | – | 3.3-inch segment-code LCD | Full-color LCD | – |
| Power sources | – | – | – | 2 AA alkaline batteries or 5V 1A USB-C |
| DC input voltage | – | 5V | 5V-24V | 5V |
| Charging port | – | – | USB-C | USB-C |
| Battery runtime (hours) | – | – | 72 | – |
| Battery capacity (mAh) | – | 800 | 1,000 | – |
| Battery chemistry | – | Lithium | Lithium-ion polymer | Alkaline (2 AA) |
| Operating temp min (℉) | – | 14 | – | – |
| Operating temp max (℉) | – | 140 | – | – |
| Operating temp min (℃) | – | -10 | – | – |
| Operating temp max (℃) | – | 60 | – | – |
| Warranty | – | 1 Year | 1 Year | 1 Year |
Specifications last updated Oct 20, 2026.