SwitchBot CO2 Sensor Wins ‘BEST BUY’ Award from Kaden Hiho Magazine for Air Quality Monitor Category

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SwitchBot CO2 Sensor Named ‘BEST BUY’ by Kaden Hiho Magazine

SWITCHBOT Inc., a leading IoT and smart home solutions provider, has announced that its “CO2 Sensor (with Thermometer and Hygrometer)” has received the “BEST BUY” award in the air quality monitor comparison featured in the April 2026 issue of ‘Kaden Hiho’, a specialized home appliance magazine published by Shinyusha. The product was particularly praised for its highly visible display and extensive smart home integration capabilities.

Currently, SwitchBot is running a limited-time campaign to support new lifestyles, offering the CO2 Sensor at a 15% discount, bringing the price down from 7,980 JPY (tax included) to 6,780 JPY (tax included).

SwitchBot CO2 Sensor displaying CO2 levels, temperature, and humidity, with a 'Kaden Hiho BEST BUY' badge.

Evaluation Highlights from ‘Kaden Hiho’

The magazine conducted a comparative review of five air quality monitors, focusing on the accuracy of CO2, temperature, and humidity measurements, as well as app usability and installation flexibility. The SwitchBot CO2 Sensor achieved a total score of 57.8 out of 70 points, securing its position as the best buy in its category.

Key aspects that contributed to its high evaluation include:

  • Superior Visibility and Intuitive App Operation: The large LCD on the device provides clear information, and the accompanying app allows users to view six different metrics—including CO2, temperature, and humidity—at a glance. The ability to graph historical data makes it easy to track environmental changes over time.

  • Automated Environmental Improvement through Smart Home Integration: When paired with a SwitchBot Hub (sold separately), the sensor enables practical automations, such as automatically activating a circulator or air purifier when CO2 levels rise. This functionality was recognized as a significant added value beyond that of a standalone sensor.

  • Flexible Installation Options: The sensor can be powered via USB-C or two AA batteries, offering a cable-free option and the flexibility to be wall-mounted, making it highly adaptable to various living environments.

Product Overview

The SwitchBot CO2 sensor and its accompanying smartphone app displaying environmental data.

The CO2 Sensor (with Thermometer and Hygrometer) measures:

  • CO2: 400 to 9999 ppm

  • Temperature: -20 to 80 °C

  • Humidity: 0 to 99%

It can be powered by USB-C or two AA batteries, and its dimensions are approximately 92 × 79 × 25 mm. The official store price is 7,980 JPY (tax included).

Importance of Visualizing Air Quality, Especially in Spring

Spring often sees a peak in pollen and dust, leading many to keep windows closed for extended periods. However, a sealed indoor environment can cause carbon dioxide (CO2) levels to rise, potentially leading to decreased concentration and drowsiness. The CO2 Sensor visualizes invisible air conditions, providing timely alerts for ventilation and supporting the creation of a healthy environment for new beginnings.

A chart illustrating CO2 concentration levels and their corresponding effects on human health, with recommended limits.

Indoor CO2 concentration serves as a key indicator for assessing ventilation and overall air quality. Guidelines from organizations such as the Japanese Ministry of Health, Labour and Welfare suggest maintaining indoor CO2 levels below 1,000 ppm for a comfortable environment. Visualizing air conditions and ventilating at appropriate times is crucial.

New Life Campaign Underway

The CO2 Sensor is available at a special campaign price of 6,780 JPY (tax included), representing a 15% discount from the usual price of 7,980 JPY.

The campaign is available at the following official stores:

Product Features

High-Precision NDIR Sensor

A close-up of the internal components of the SwitchBot CO2 Sensor, highlighting its NDIR CO2 sensor and Swiss-made temperature and humidity sensor.
The CO2 sensor employs the NDIR (Non-Dispersive Infrared) method, providing high-precision CO2 concentration measurements with an accuracy of ±50 ppm, aiding in precise indoor environment monitoring. The temperature and humidity sensors are equipped with reliable Swiss-made chips.

“6-in-1” Display for Comprehensive Information

The SwitchBot CO2 monitor's digital display showing CO2 concentration, temperature, humidity, time, date, comfort level, and weather forecast.
The display consolidates six key metrics—CO2 concentration, temperature, humidity, time, date, comfort index, and weather forecast—into a single screen for easy viewing. When linked with a separately sold SwitchBot Hub, users can check conditions remotely and view weather forecasts up to 12 hours in advance.

Three Types of Alert Notifications

A smartphone screen showing an alert notification from the SwitchBot app, along with images of the device's blinking display and an audible alarm icon, indicating high CO2 levels.
When CO2 levels exceed a preset threshold, the device notifies users through three methods: an audible alarm from the unit, a blinking numerical display on the screen, and an app notification on a smartphone. These customizable alerts ensure that users are promptly informed about the need for ventilation. (Smartphone notifications require a separately sold SwitchBot Hub product.)

Long-Term Data Storage

A screenshot of the SwitchBot app displaying historical data for CO2, temperature, and humidity, with options for data export.
Measurement data is stored in the app for up to two years and can be exported in CSV format. This feature makes the CO2 Sensor a valuable analysis tool for improving environments not only in homes but also in offices, stores, and other settings.

Seamless Integration with Other Smart Home Devices

An illustration depicting a SwitchBot CO2 sensor, Hub Mini, and a circulator working together in a living room to automatically manage air quality.
By connecting with separately sold SwitchBot Hub products, the CO2 Sensor can be integrated with other SwitchBot devices, such as circulators and air purifiers. This allows for the creation of automated routines that respond to indoor environmental conditions.

About SwitchBot

A graphical representation of a smart home powered by various SwitchBot IoT devices, highlighting their comfort, automation, and security features.
SwitchBot is a global robotics manufacturer that operates the “SwitchBot” smart home brand, which has surpassed 2 million households in Japan and 5 million cumulative units sold worldwide across more than 100 countries and regions, and the “OneRobotics” group of robotics brands.

The company’s mission is “to enrich and comfort people’s lives at home through technological innovation.” It aims to create a society where robots take over daily physical and mental burdens. SwitchBot strives to provide “leisure” for people’s time and minds, enabling them to immerse themselves in essential human activities, daily joys, and experiences through technology. Currently, the company develops three brands:

  • SwitchBot: Embodied AI and smart home robots for residential use.

  • Acemate: Robotics specialized in the sports sector.

  • ONERO: Development of humanoid robots and core AI technologies.

Company Profile

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