Smart Thermostat | Sensirion's sensor technology achieves high precision, reliability, and energy efficiency. Visualizing air quality with STCC4 and SHT40.

CO2 sensor for indoor air quality applications with a form factor!

The "STCC4" is one of the world's smallest sensors designed for the direct measurement of CO2 gas concentration. It has greatly expanded the new possibilities for CO2 measurement applications that were previously limited by size and cost constraints. This sensor, designed to be seamlessly integrated into compact electronic devices, is a groundbreaking product in the CO2 sensor market. Additionally, this product utilizes a new technology for thermal conductivity sensing, providing the accuracy required for indoor air quality applications with low power consumption. 【Specifications (partial)】 ■ Designated CO2 measurement range: 400 - 5000ppm ■ Accuracy: ±100.0ppm ±10.0% m.v. ■ Supply voltage: 3.3V ■ Average supply current: 850uA ■ Maximum supply current: 5mA *For more details, please refer to the related links or feel free to contact us.

• Gas Detection Sensor

Enabling smooth testing across various applications.

The "SEK-STCC4" is a CO₂ evaluation kit. Integrates STCC4 into the development board. [Included items] ■ STCC4 development board × 1 ■ Adapter cable × 1 ■ Jumper wire set × 1 * SEK-SensorBridge is required separately. Please feel free to contact us if you have any requests. * For more details, please refer to the related links or feel free to contact us.

• Sensors
• Evaluation Board
• Other Sensors

For industrial applications! Various output characteristics and membrane filters are available according to your needs.

The "SHT40I-HD1B" is an analog temperature and humidity sensor developed for demanding industrial applications such as refrigerators and air conditioners, as well as other applications where system noise levels are high and the application of digital solutions is difficult. It features a supply voltage of 5V, a robust housing, and high ESD resistance, making it suitable for harsh environmental requirements. Additionally, with the optional variable power heater, it can be used in extremely challenging environments such as stable high humidity or condensation environments. 【Specifications (partial)】 ■Humidity - Standard relative humidity accuracy: 2.5% RH - Operating relative humidity range: 0-100% RH - Response time (T63%): 4s *For more details, please download the PDF or feel free to contact us.

• Sensors

The integration of the SHT40I and PTFE membrane filter enhances protection against particles and enables sensing under harsh conditions.

The "SHT40I-HD1F" is an analog temperature and humidity sensor with a filter thin film, featuring a supply voltage of 5V, a robust housing, and high ESD resistance, suitable for the requirements of harsh environments. It is developed for demanding industrial applications such as refrigerators and air conditioners, as well as other applications where system noise levels are high and the application of digital solutions is challenging. With the optional periodically variable power heater, it can be used in extremely harsh environments, such as stable high humidity or condensation environments. 【Specifications (partial)】 ■Humidity - Standard relative humidity accuracy: 2.5% RH - Operating relative humidity range: 0-100% RH - Response time (T63%): 4s *For more details, please download the PDF or feel free to contact us.

• Sensors

Provides a supply voltage of 5V, maximum level of robustness, and excellent ESD protection!

The "SHT40I-BD1B" is a digital temperature and humidity sensor that employs Sensirion's proven CMOSens technology, ensuring high reliability. It is based on a wealth of features and our advanced expertise in humidity detection, making it suitable for measurements under harsh conditions in industrial applications. Please feel free to contact us if you have any inquiries. 【Specifications (partial)】 ■Humidity - Standard relative humidity accuracy: 2% RH - Operating relative humidity range: 0-100% RH - Response time (T63%): 4s *For more details, please download the PDF or feel free to contact us.

• Sensors

The integration of the SHT40I and PTFE membrane filter enhances protection against particles and enables sensing in harsh conditions!

The "SHT40I-AD1F" is a digital temperature and humidity sensor with a filter membrane that utilizes Sensirion's proven CMOSens technology, ensuring high reliability. It features a wide operating voltage range, compact design, and robust housing, allowing for seamless integration. Based on a wealth of features and Sensirion's advanced expertise in humidity detection, it is well-suited for measurements under harsh conditions in industrial applications. 【Specifications (partial)】 ■Humidity - Standard relative humidity accuracy: 2% RH - Operating relative humidity range: 0-100% RH - Response time (T63%): 4s - Calibration certificate: factory calibrated *For more details, please download the PDF or feel free to contact us.

• Sensors

Standard relative humidity accuracy of 2% RH! Suitable for measurements under harsh conditions in industrial applications.

We would like to introduce the digital temperature and humidity sensor 'SHT40I-AD1B' that we handle. This sensor features a wide operating voltage range, compact design, and robust housing, allowing for seamless integration. It provides a supply voltage of 5V, top-level durability, and excellent ESD protection. 【Specifications (partial)】 ■Humidity - Standard relative humidity accuracy: 2% RH - Operating relative humidity range: 0-100% RH - Response time (T63%): 4s - Calibration certificate: Factory calibrated *For more details, please download the PDF or feel free to contact us.

• Sensors

Reduced power consumption and improved accuracy specifications! Built with an optimized new CMOSens chip.

The SHT40-BD1F is a temperature and humidity sensor with a filter thin film, featuring ±1.8% RH and 0x45 I2C output. The integration of the SHT4x and PTFE membrane filter enhances protection against particles, enabling sensing in harsh conditions. It complies with relevant healthy building standards, including RESET and WELL Building Standard. Additionally, it boasts the best price-performance ratio in the market. 【Specifications (excerpt)】 ■ Standard relative humidity accuracy: 1.8% RH ■ Operating relative humidity range: 0-100% RH ■ Response time (T63%): 4s ■ Average supply current: 0.4uA ■ Size (LxWxH): 1.5×1.5×0.69mm *For more details, please download the PDF or feel free to contact us.

• Sensors
• Other temperature and humidity measuring instruments

Expanded supply voltage range of 1.08V to 3.6V! Suitable for mobile and battery-powered applications.

The SHT40-AD1F is a temperature and humidity sensor with a filter thin film, featuring ±1.8% RH and a 0x44 I2C output. By integrating the SHT4x with a PTFE membrane filter, it enhances protection against particles, enabling sensing in harsh conditions. It is built with a completely new CMOSens chip optimized to reduce power consumption and improve accuracy specifications. 【Specifications (excerpt)】 ■ Standard relative humidity accuracy: 1.8% RH ■ Operating relative humidity range: 0-100% RH ■ Standard temperature accuracy: 0.2℃ ■ Supply voltage: 1.08-3.6V ■ Size (LxWxH): 1.5×1.5×0.69mm *For more details, please download the PDF or feel free to contact us.

• Sensors
• Other temperature and humidity measuring instruments

The best price-performance ratio in the market! Compliant with healthy building standards RESET and WELL Building Standard.

The "SHT40-BD1B" is a digital temperature and humidity sensor with an accuracy of ±1.8%/maximum ±3.5% RH and a 0x45 I2C output. It has an extended supply voltage range of 1.08V to 3.6V, making it suitable for mobile and battery-powered applications. Additionally, its very small size housed in a robust DFN package allows for integration into challenging designs while meeting reliability requirements, as demonstrated by JEDEC JESD47 certification. 【Specifications (excerpt)】 ■ Standard relative humidity accuracy: 1.8% RH ■ Operating relative humidity range: 0-100% RH ■ Standard temperature accuracy: 0.2℃ ■ Supply voltage: 1.08-3.6V ■ Average supply current: 0.4uA *For more details, please download the PDF or feel free to contact us.

• Sensors
• Other temperature and humidity measuring instruments

Very small size of the robust DFN package! Suitable for mass production applications.

The "SHT40" is a digital temperature and humidity sensor with an accuracy of ±1.8%/maximum ±3.5% RH. It is built with a completely new CMOSens chip optimized to reduce power consumption and improve accuracy specifications. It has an extended supply voltage range of 1.08V to 3.6V, making it suitable for mobile and battery-powered applications. The very small size of the robust DFN package allows it to be integrated into challenging designs and meets the highest level of reliability requirements demonstrated by JEDEC JESD47 certification. 【Specifications (excerpt)】 ■ Standard relative humidity accuracy: 1.8% RH ■ Operating relative humidity range: 0-100% RH ■ Supply voltage: 1.08-3.6V ■ Average supply current: 0.4uA ■ Size (LxWxH): 1.5×1.5×0.5mm *For more details, please download the PDF or feel free to contact us.

• Sensors
• Other temperature and humidity measuring instruments

We have newly added a **"Frequently Asked Questions Q&A"** section to the Hyper CLT sheet website. It clearly summarizes many questions frequently asked by those considering the introduction of the product, such as "What types of civil engineering sites can it be used on?", "Can it be used on rainy days?", "Is it compatible with large machinery?", and "What is NETIS?". The Hyper CLT sheet is a lightweight wooden sheet utilizing wood CLT, suitable for a wide range of applications including temporary roads, access routes, and heavy machinery work yards. It is also registered as a **Ministry of Land, Infrastructure, Transport and Tourism NETIS registered technology "TH-250021-A"**. Since it is a new material, we will not leave any uncertainties unaddressed. We aim to create a website that makes it easy to resolve questions before introduction, including information on wood, NETIS, civil engineering, and CLT, and we will continue to enhance the Q&A section.

We have added a new **"Glossary"** to the Hyper CLT sheet website. In the civil engineering and construction industries, there are many specialized terms such as "CLT," "NETIS," "temporary roads," and "wooden lightweight sheets." Therefore, we have introduced related terms in an easy-to-understand manner so that those who are encountering Hyper CLT sheets for the first time can understand the products and technologies. Hyper CLT sheets are wooden lightweight sheets for civil engineering that utilize wood CLT and are registered under the Ministry of Land, Infrastructure, Transport and Tourism's NETIS technology as **"TH-250021-A."** We hope that by not only conveying the features of the product but also sharing the underlying technologies and terminology, users will feel a closer connection to Hyper CLT sheets. We will continue to enhance our website and provide clear information related to wood, NETIS, civil engineering, and CLT.

Hotron Inc. has launched its new product, the "Vehicle Count Sensor CCS3"! This product is a ceiling-mounted sensor that combines infrared and radar technology. It reliably detects vehicles in both directions with a single unit, accommodating traffic during congestion and vehicle passing, thus achieving efficient occupancy management in large parking lots. Additionally, it can be utilized for exit warning purposes in addition to vehicle counting, contributing to the safe and smooth operation of parking facilities. 'Features' - Improved detection performance against changes in road surface during rainy weather by using both infrared and radar. - Equipped with IP67 waterproof and dustproof performance, making it effective even in salt damage areas. - Various settings can be configured from a dedicated app (for Android devices), with current settings easily understandable at a glance. - The base dimensions are the same as the previous model "CCS2," allowing for smooth replacement of existing equipment. *For more details, please refer to the product information, catalog download, or contact us.*

On September 15, 2026, we issued a press release regarding the wooden lightweight sheet "Hyper CLT Sheet." The Hyper CLT Sheet is a civil engineering sheet that utilizes CLT (Cross-Laminated Timber) stacked in an orthogonal direction. It can be used in various locations such as temporary roads, access routes, heavy machinery work yards, and material storage areas. The 5×10 version weighs approximately 230 kg, making it relatively lightweight and easy to install, remove, and relocate. Additionally, it offers environmental benefits such as reducing glare and metallic sounds typical of wood, as well as CO2 fixation. Furthermore, it can be proposed for the use of new technologies in public works as a **registered technology with the Ministry of Land, Infrastructure, Transport and Tourism "TH-250021-A."** Through this press release, we aim to expand the new wooden lightweight sheet that combines wood, NETIS, civil engineering, and CLT to more construction sites.

We have published the latest issue (No. 94) of the ISO-related information magazine "Intertek News." Intertek News delivers information and various topics related to ISO audits, certifications, and verifications. This issue features a special section titled "Interpreting Standard Revisions," which introduces key points of management system standard requirements that new personnel should understand as preparation for standard revisions. Additionally, we have included customer case studies, articles contributed by auditors, and information on certifications and standards, as well as the latest topics, so please take a look.