Temtop C10 2ND | 180-Day CO₂ Monitor with E-Ink & App

Temtop C10 2ND
Advanced CO₂ Monitor

Your trusted companion for indoor air monitoring

All-in-One Monitoring: The C10 2nd monitors indoor carbon dioxide levels, temperature, humidity, and time in real-time, meeting four daily life needs with a single device, providing comprehensive indoor environmental monitoring for users.
High-Definition Eye-Care E-Paper Display: Equipped with a 3.4-inch large e-ink screen that offers a wide viewing angle and high readability, ensuring clear display of monitoring values under various lighting and viewing angles.
Extended Battery Life, Eco-Friendly Design: Utilizing energy-saving algorithms and e-ink screen technology, along with a 2200mA large-capacity lithium battery, the C10 2nd achieves a battery life of up to 180 days, reducing the hassle of frequent charging or battery replacement.
Smart Connectivity and Intelligent Monitoring: Supporting app connectivity, it allows users to view and export historical data for nearly 180 days. It also supports over-the-air (OTA) product updates, providing continuous technical support.
Precision Sensors, Intuitive Alerts: Trust in the accuracy of Sensirion's micro CO₂ and temperature/humidity sensors for reliable air quality data. The simple three-color air quality indicator and an alarm system keep you informed and in control of your living space.

Clarity, Comfort, Confidence

Your trusted companion for indoor air monitoring, equipped with Sensirion sensors for precise CO₂ and temperature-humidity tracking. The C10 2ND offers reliable, real-time insights to help you create a healthier, more comfortable environment.

180 Days on a Single Charge

C10 2ND excels in long-term monitoring with a 180-day battery life, ensuring continuous protection for your indoor air quality without frequent recharging.

180 Days

Exceptional Battery Performance

With our advanced power management system, the C10 2ND offers industry-leading battery life — six months of continuous monitoring on a single charge.

Key Features

Comprehensive Alert System

Simplified monitoring with a 3-color indicator and buzzer alarm. Clear visuals and audible alerts provide intuitive and prompt air quality insights.

Two Buttons, Total Control

Effortless control with just two buttons: switch Bluetooth, buzzer, and temperature units with ease. Simplified functionality for seamless operation.

Eye-Caring E-Ink Display

C10 2ND cares for your eyes with an ultra-wide, backlit-free E-Ink screen. Enjoy crystal-clear text from any angle, keeping you informed at all times.

Sleek and Chic Design

Elevate your home aesthetics with C10 2ND. Its sleek and chic design complements the modern household, embodying simplicity with sophistication.

Smart App Control

Unlock the full potential of C10 with app control. Tailor device settings, gain air insights, export data, calibrate your device, explore historical trends, check the weather, and stay up-to-date with OTA updates – all at your fingertips.

Please note: Our product relies on close-range connections for optimal performance.

Application Scenarios

Home Use

Monitor bedrooms, living rooms, and nurseries for healthier air quality.

Office Environment

Boost productivity by keeping CO₂ levels in check in meeting rooms and workstations.

Educational Facilities

Ensure well-ventilated classrooms for better focus and safety.

Outdoor / Travel

Compact and portable — perfect for RVs, camping, or on-the-go air testing.

Specifications

Model	C10 2ND
CO₂ measuring range	400-5000ppm
CO₂ accuracy	±(40ppm +5%) (400-2500ppm)
Temperature range	-10-60°C (14-140°F)
Temperature accuracy	±0.5°C
Humidity range	0-99%RH
Humidity accuracy	±3%RH
Display	3.4-inch E-Paper (E-Ink), no backlight
Battery capacity	2200mAh Li-ion
Battery life	Up to 180 days (power-saving mode)
Connectivity	Bluetooth (App support for iOS/Android)
Data logging	180 days local storage + export via App
Dimensions	3.9 x 2.9 x 0.8 inches
Weight	~0.33 lb (150g)
Included in box	C10 2ND monitor, USB-C cable, user manual, stand accessory

Free Shipping (US)

30-Day Returns

2-Year Warranty

FCC / CE / RoHS

PaymentDelivery detailsTerms of salesAbout usContact us

Payment

Payment Methods

We accept a wide range of payment options, including:

✅ Credit Cards & Debit Cards

✅ Apple Pay & Google Pay

✅ PayPal

✅ And many other secure payment methods

If you prefer to use another payment option not listed above, please contact us before completing your order—we'll do our best to accommodate your request.

Payment Timeline

Please complete your payment within 7 days after winning the item. If payment is not received within this period, we will follow eBay's non-payment process.

Tax & Import Fees

Any applicable import duties, taxes, or customs fees in your region are the buyer's responsibility. We recommend checking with your local customs office for further details.

Special Requests

If you have any special requirements (e.g., gift wrapping, specific shipping instructions), please clearly note them in the eBay order notes during checkout.

We strive to make every transaction smooth and transparent. Thank you for shopping with us!

Delivery details

⏰ Processing & Shipping Time

Your order will be dispatched within 1-5 business days after payment confirmation. The total delivery time depends on your shipping address, as we will arrange shipment from the warehouse closest to you.

📦 Warehouse & Shipping Details

We intelligently ship from the nearest warehouse based on your delivery address. The specific shipping options are as follows:

Delivery Region	Shipping From	Carrier / Service	Estimated Delivery Time (after dispatch)
United States	US Warehouse	UPS, FedEx, USPS, or DHL e-commerce	2-6 business days
Europe	EU Warehouse	DHL Express	2-5 business days
United Kingdom	UK Warehouse	ParcelForce	2-5 business days
China	CN Warehouse	Standard Parcel (default surface mail)	8-15 business days
China	CN Warehouse	Express Service (additional fee required)	7-21 business days
Other Regions	Optimal Warehouse	Standard Postal Service (e.g., China Post, Hong Kong Post)	10-30 business days
Other Regions	Optimal Warehouse	Express Service	7-21 business days

⚠️ Important Notes

Address Accuracy: Please ensure you provide a complete and accurate shipping address along with a valid phone number to ensure smooth delivery.
Delivery Issues: If a package cannot be delivered due to address problems, we will contact you via eBay Messages to discuss a solution (such as changing the shipping method or arranging shipment from another warehouse).
Missing Package: If you have not received your order within the estimated delivery window, please contact us promptly. We will fully assist in tracing and resolving the issue.
Special Requests: For any special delivery instructions, please note them clearly in the "Notes to Seller" section during checkout.

Terms of sales

Product Warranty

We are the official Elitech & Temtop store on eBay, guaranteeing that all products sold are 100% genuine and original.

Devices come with 12 to 24 months of free maintenance service.
Accessories are covered by a 3-month warranty period.

For warranty or replacement service, please contact us first. We will respond within 12 hours.

Return Policy

If you are not satisfied with your purchase, you may request a return within 30 days of receiving the item. Please ensure the item is in its original condition and contact us via email first to obtain the return address and instructions.

The standard process is: Submit a return request → Seller processes → Receive return label → Arrange the return → Refund is issued after the returned item is received.

If you receive a defective item, please provide photo/video evidence within 30 days while keeping the item intact. Reply with the relevant information to the designated email, and we will guide you through the exchange or assist with the return/refund process.

Please note: We reserve the right to refuse returns for items that are beyond the 30-day period, have been used, or are damaged. Additionally, any repair or replacement costs required for the returned item shall be borne by the buyer.

Buyer Protection

As a trusted eBay seller, we sincerely promise to happily address any of your questions and ensure you have a satisfactory and worry-free shopping experience. Should you encounter any issues during your purchase, please be sure to communicate with us via the eBay messaging system or our dedicated email address. We are committed to providing you with our full assistance.

About us

About Us
Elitech Technology Co., Ltd. (Elitech) is a manufacturer of temperature and humidity monitoring and control solutions with 26 years of industry experience, headquartered in Silicon Valley, California, USA. We specialize in the R&D and manufacturing of high-precision environmental monitoring equipment. Our core products include:

Temperature and Humidity Data Loggers
Refrigeration Units and Electrical Control Panels
Digital Hygrometers
Smart Halogen Leak Detectors
Microcomputer Temperature and Humidity Controllers

As a direct manufacturer and supplier, we leverage efficient supply chain and production management to consistently deliver reliable, competitively priced products that support successful operations across commercial and industrial applications.

Our Strengths

Global Presence: Offices and warehouses in the U.S., EU, UK, and China enable rapid shipping and localized after-sales support.
In-House R&D Capabilities: Our experienced development team drives continuous product innovation and technological advancement.
Stable Supply Chain: Direct factory sourcing with stringent production and material controls ensures consistent delivery and outstanding value.

Tax Notice
Buyers are responsible for any import duties, taxes, or customs clearance fees incurred at the destination. Consult local customs or tax authorities beforehand to accurately estimate total delivery costs based on specific tax policies and rates.

Our Service Promise

Thank you for trusting us with your purchase. Every order is truly meaningful to us, and we are committed to providing you with a smooth, reassuring, and enjoyable shopping experience.

If you encounter any issues during your purchase or have any questions about our products, please feel free to contact us via eBay Messages at any time. We value your feedback and will make every effort to provide a solution within 24H.

We are here not only for order support but also to assist with technical questions and product usage. We look forward to growing with you through our conversations and becoming your trusted technical partner.

Service Hours:
Monday to Friday, 9:00 AM – 6:00 PM . Please note that responses may be slightly delayed on weekends and public holidays.

Thank you once again for giving us the opportunity to serve you. We wish you a pleasant shopping experience and smooth use of your products.