--- product_id: 49398871 title: "Portable Digital Temperature Humidity Indoor 9999ppm NDIR Sensor IAQ CO2 Monitor Wet Bulb Temperature (WB) Dew Point (DP) Tester CO2 Monitor for Indoor Air Quality (IAQ) Diagnosis" brand: "tekcoplus" price: "$394.31" currency: USD in_stock: true reviews_count: 8 category: "Tekcoplus" url: https://www.desertcart.us/products/49398871-portable-digital-temperature-humidity-indoor-9999ppm-ndir-sensor-iaq-co2 store_origin: US region: United States of America --- # Adjustable audible CO2 alarm Triple temp & humidity display NDIR sensor 0-9999ppm CO2 range Portable Digital Temperature Humidity Indoor 9999ppm NDIR Sensor IAQ CO2 Monitor Wet Bulb Temperature (WB) Dew Point (DP) Tester CO2 Monitor for Indoor Air Quality (IAQ) Diagnosis **Brand:** tekcoplus **Price:** $394.31 **Availability:** ✅ In Stock ## Summary > 🌬️ Breathe smarter, live better — your indoor air’s new best friend! ## Quick Answers - **What is this?** Portable Digital Temperature Humidity Indoor 9999ppm NDIR Sensor IAQ CO2 Monitor Wet Bulb Temperature (WB) Dew Point (DP) Tester CO2 Monitor for Indoor Air Quality (IAQ) Diagnosis by tekcoplus - **How much does it cost?** $394.31 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/49398871-portable-digital-temperature-humidity-indoor-9999ppm-ndir-sensor-iaq-co2) ## Best For - tekcoplus enthusiasts ## Why This Product - Trusted tekcoplus brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **User-Centric Design:** Backlit display, data hold, min/max tracking, and easy manual calibration make monitoring effortless and professional-grade. - • **Portable & Versatile:** Lightweight and battery-powered, perfect for home, office, labs, or hospitality settings—stay ahead in any environment. - • **Smart Alerts for Safety:** Customizable audible alarm instantly notifies you when CO2 levels exceed safe thresholds—never miss a critical alert. - • **Precision Air Quality Insight:** Advanced NDIR sensor delivers ultra-reliable CO2 readings up to 9999ppm, ensuring your indoor environment is always optimized. - • **Comprehensive Climate Monitoring:** Simultaneously track temperature (°F/°C), humidity, wet bulb, and dew point for a full-spectrum IAQ diagnosis. ## Overview The TEKCOPLUS Portable Digital CO2 Monitor uses cutting-edge NDIR technology to measure indoor air quality with precision, displaying temperature, humidity, wet bulb, and dew point data on a triple display. Its adjustable audible alarm and user-friendly features make it an essential tool for professionals and health-conscious millennials aiming to optimize their indoor environments. ## Description TEKCOPLUS Portable Digital Temperature Humidity Indoor 9999ppm NDIR Sensor IAQ CO2 Monitor Wet Bulb Temperature (WB) Dew Point (DP) Tester CO2 Monitor for Indoor Air Quality (IAQ) Diagnosis : desertcart.co.uk: DIY & Tools Review: Easy to use - Looks easy to use, does what it needs to do out of the box which is just what I want. I Need it for monitoring ventilation levels in fitness classes with the covid regulations. Review: Great seller - Great seller. As described. Thank you. ## Features - TRIPLE DISPLAY - Temperature (°F/ °C) and Humidity (Air, Wet Bulb, or Dew Point Info are all available) - IDEAL INDOOR AIR QUALITY METER FOR HOME - Stable NDIR Sensor for CO2 Detection for laboratories, hotels, etc - MULTI FUNCTIONS FEATURES - BackLight , Hold Data , Min/Max, Auto / Manual power off ,Easy manual calibration on CO2 and humidity - NON-DISPERSIVE INFRARED TECHNOLOGY -NDIR SENSOR for CO2 DETECTION used to ensure the reliability and long-term stability. Measures 0~9999ppm while 0~2000ppm can maintain a high accuracy at +/- 50pp - AUDIBLE SOUND ALARM- The alarm beeps when the CO2 Level exceeds the preset value. The alarm threshold is adjustable. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01KTJL6OK | | Alarm | Audible | | Best Sellers Rank | 399,580 in DIY & Tools ( See Top 100 in DIY & Tools ) 103 in CO2 Detectors | | Brand | TEKCOPLUS | | Colour | Without CD Software & Adaptor | | Country of Origin | China | | Customer Reviews | 4.2 4.2 out of 5 stars (204) | | Included Components | CO2 Meter | | Item Dimensions D x W x H | 35.3D x 7.1W x 22.4H centimetres | | Item Weight | 0.29 Pounds | | Manufacturer | TekcoPlus Ltd | | Material | ABS | | Model Number | COTK-57 | | Operating Humidity | 0-95 percent | | Power source | Battery Powered | | Product Style | Digital CO2 Meter | | Sensor Type | NDIR Sensor | | UPC | 713072686026 713072682325 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 60 Degrees Celsius | ## Product Details - **Alarm:** Audible - **Brand:** TEKCOPLUS - **Colour:** Without CD Software & Adaptor - **Item weight:** 0.29 Pounds - **Operating humidity:** 0-95 percent - **Power source:** Battery Powered - **Product dimensions:** 35.3D x 7.1W x 22.4H centimetres - **Sensor type:** NDIR Sensor - **Style:** Digital CO2 Meter - **Upper temperature rating:** 60 Degrees Celsius ## Images ![Portable Digital Temperature Humidity Indoor 9999ppm NDIR Sensor IAQ CO2 Monitor Wet Bulb Temperature (WB) Dew Point (DP) Tester CO2 Monitor for Indoor Air Quality (IAQ) Diagnosis - Image 1](https://m.media-amazon.com/images/I/61ug6rENQIL.jpg) ## Questions & Answers **Q: How often should I calibrate the CO2 monitor?** A: For best results, calibrate the CO2 monitor every six months or whenever you notice a significant drift in readings **Q: Can I use the monitor without the 9V adaptor?** A: Yes, the monitor can run on the included batteries. The 9V adaptor is optional for continuous power. **Q: Is the PC connection cable included?** A: No, the PC connection cable is not included. It can be purchased separately if needed for advanced data analysis. **Q: How loud is the sound warning alarm?** A: The sound warning alarm is loud enough to alert you to high CO2 levels but not excessively loud to cause disturbance. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to use *by M***. on 29 October 2020* Looks easy to use, does what it needs to do out of the box which is just what I want. I Need it for monitoring ventilation levels in fitness classes with the covid regulations. ### ⭐⭐⭐⭐⭐ Great seller *by A***R on 6 August 2018* Great seller. As described. Thank you. ### ⭐⭐⭐⭐⭐ Thank you *by S***I on 5 August 2019* Happy ## Frequently Bought Together - CO2 Meter Portable CO2 Detector Digital CO2 Monitor with Alarm Function Carbon Dioxide Temperature and Humidity Meter, NDIR CO2 Sensor Indoor Air Quality Monitor for Home Office Grow Room - Klein Tools ET110 CO Meter, Carbon Monoxide Tester and Detector with Exposure Limit Alarm, 4 x AAA Batteries and Carry Pouch Included - Klein Tools IR1 Infrared Thermometer, Digital Laser Gun is Non-Contact Thermometer with a Temperature Range -4 to 752-Degree Fahrenheit --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/49398871-portable-digital-temperature-humidity-indoor-9999ppm-ndir-sensor-iaq-co2](https://www.desertcart.us/products/49398871-portable-digital-temperature-humidity-indoor-9999ppm-ndir-sensor-iaq-co2) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*