SenseCAP - Temperature, Humidity, and CO2 Sensor - S2103

by Seeed

SenseCAP S2103- LoRaWAN CO2, Temperature, and Humidity Sensors satisfy industrial long-distance data acquisition with a wide range of 400 to 10000 ppm, -40°C to 85°C and 0 to 100% RH respectively. With Bluetooth 5.0 for easy configuration and firmware upgrade and a built-in replaceable battery for minimal maintenance, it also supports three different LoRaWAN network architectures enabling you to easily join it in existing gateways and network servers to build flexible and high-performance sensor network.



  • Wide measuring range: with a measuring range of 400-10000 ppm, the accuracy of  400 to 5000 ppm: ±(30+3%MV), and resolution of 1 ppm.

  • LoRaWAN Wireless Transmission: ultra-low power consumption and ultra-wide-distance transmission range. It has Max.10 years of battery life and can cover a transmission range of 2km in urban scenes and 10km in line of sight scenes

  • Industrial design: -40 ~ 85℃ operating temperature and IP66 rating, suitable for indoor, outdoor, and harsh environments such as high UV exposure, heavy rain, dusty conditions, etc. 

  • Over the Air Configuration in 1 min: scan the QR code on device and just in a few clicks to choose the frequencies you want, all the configuration can be done via Bluetooth  

  • Easily get data, no clunky software interfaces: temperature and humidity data can smoothly be sent to your phone and cloud servers or other IoT data management platforms you’re using, 

  • Powerful supported SenseCAP APP: you can set threshold value (just focus on the data you need take action for), time intervals (improve the battery efficiency), and set alarms if data is out of the safe range.

  • Flexibly compatible with various LoRaWAN gateways: can be used with different types of LoRaWAN gateways and compatible with multiple LoRaWAN Network Servers (Helium, TTN) to enable our sensor quickly join in your current LoRaWAN networks 



This LoRaWAN CO2, Temperature, and Humidity Sensor is compliant with LoRaWAN protocol of v1.0.3 Class A and has a wide measuring range and can work in a wide range of scenarios, like office/classroom Ambient Monitoring livestock shed environment monitoring and fermentation monitoring. 


Why is SenseCAP S210x outstanding in LoRaWAN Sensors? 


S210x offers an easy-to-use experience design. 

Traditional LoRaWAN Sensors

SenseCAP S210x


Parameter Setting 

  • need a cable to connect the device to computer; unfriendly to users without technical background 

  • no need for a cable; a few clicks on your phone will finish all the configuration work via Bluetooth

Device Status Observation

  • disassemble the device and observe the status of the lights on PCBA

  • external buttons and LED on the device, easy to press and observe


  • use customized battery; can not be accessible on the market 

  • some need a Wiring Method to power the device

  • the standard D-size Li-SOCL2 battery  available on Amazon and other platforms

  • no need for wires, battery-powered

Frequency offer

  • if you get the wrong frequency, then you will have to change it and bear freight or custom cost

  • each device supports frequencies from 863MHz ~928MHz, you can change the frequency at any time via your phone

Deployment Test

  • it’s hard to find whether the sensor works during the field deployment stage

  • can know the real-time status of your device via your phone

With it, you can be benefited from

Scan-and-Play Simplicity, Easy Configuration via Bluetooth in Just 1 min 

Bluetooth 5.0 has reduced many configuration works, no need for connecting it with your computers or doing some complicated wiring work. All you need to do is to scan the QR code on the device, and the DevEUI、AppEUI and AppKey will automatically show up on your phone. After a few clicks to set the frequency (because each device supports 7 frequencies, more info is shown below),  the whole configuration process is done! 

Individuals who are new to LoRaWAN can quickly get started with this small but powerful IoT wireless temperature and humidity sensor. So, if you’re seeking some wireless temperature and humidity sensors for your smart garden or smart irrigation home projects or you want a wireless air temperature and humidity sensor to detect the ambient air quality for your home or office. This wireless long-range air temperature and humidity sensor is the one you don’t want to miss. 

For business, in order to achieve the biggest efficiency, it is important to cut the time and cost that is going to be spent on large scale device deployment and later device maintenance, this wireless LoRa temperature, and humidity sensor can give you a hand on this. 

In Q3,  we will release another two advanced functions for you to set time intervals (how often you want to receive the data) and set threshold values (not all the data are valuable and you can focus on the range you need to take action for). 

Minimal maintenance cost: power-conscious battery, rugged enclosure and remote data monitoring   

SenseCAP S2103 CO2, Temperature, and Humidity Sensor incorporates a built-in LoRa Module(LoRa-E5) for long-range transmission and a standard Li-SOCl2 high capacity battery. It is specifically designed and optimised for use cases that need to power end devices for years. To minimize the power consumption, the device wakes up, transmits the collected CO2, temperature, and humidity data to the gateway, and then goes back to sleep. 

Under the best of circumstances, the battery is expected to last for more than 10 years, depending on the environmental factors and data transmission intervals. Please kindly note that the default interval is once per hour. The sensor can quickly replace a new battery by unscrewing just three screws. The battery is a standard Li-SOCl2 battery (type: ER34615) that can purchase from Amazon and other platforms.


Different data display choices — Open API for different data management consoles 

It allows you to check the real-time data on the phone, which gives you the biggest convenience. You can remotely check the data highs & lows.

We provide an easy integration method if you’re using other PaaS to manage your data, such as Microsoft Azure or AWS or your own cloud/Edge servers. 

(3 Steps to Get the Data based on SenseCAP Portal)

Strong compatibility: works perfectly with different gateways and network servers

SenseCAP Architecture: SenseCAP ecosystem offers you a no-code and the most time-saving experience

If you’re using our SenseCAP LoRaWAN Outdoor Gateway, then you are successfully building a SenseCAP ecosystem, which means that you can onboard your device just by a simple OTA configuration on your phone. This can be a no-code process and then you can get access to a convenient web-based console.

Helium Network Architecture: make full advantage of the Helium coverage and various powerful IoT data management platforms on the Helium console

Note: if your area is covered by the Helium network, then you can directly use it by integrating the device into the network; if you don’t, you can buy SenseCAP M1/M2 to build your own Helium network 

We’re establishing cooperation with many IoT data management platforms such as Ubidots and Datacake to provide a more ready-to-use experience to you. You can just choose the platforms you want the data to go directly to on the Helium console and no need for software testing work. 

Standard LoRaWAN Architecture: for other LoRaWAN Network Servers and various LoRaWAN gateways on the marketplace 

This LoRaWAN CO2, Temperature and Humidity sensor meets the standard LoRaWAN protocol, so it supports multiple frequency bands and is perfectly compatible with different brands of gateways on the marketplace. If you already have a standard LoRaWAN gateway, you can use this sensor directly.


  • Office/Classroom Ambient Monitoring 

Carbon dioxide (CO2) levels in the workplace increase over the day, as everyone breathes in oxygen and breathes out CO2. As this is a gradual change it can be hard to notice it happening, but if you leave the room for some time and come back then you may notice the “stale” air feeling. Also, higher CO2 concentration may lead to the loss of concentration and sleepiness. This strongly lowers people’s working/study efficiency. According to research, the most suitable indoor temperature is 25℃, and relative humidity should be kept at 40-50%. With this sensor, you can monitor these three parameters at the same time on your phone and do some recording. 


  • Livestock shed

High levels of carbon dioxide can cause problems such as lack of oxygen, depression, fatigue, anorexia, and slow growth in animals. At the same time, lack of airflow can easily lead to weakened livestock immunity and disease outbreaks. With this sensor, we can know the real-time parameter of the CO2 and take action to control CO2 concentration to reduce livestock diseases and increase feed conversion.


  • Greenhouse

CO2 is one of the main raw materials for the photosynthesis of green plants. Therefore, carbon dioxide concentration becomes an important factor affecting vegetable yield in greenhouses. If the CO2 concentration is too low, photosynthesis of leaves basically stops, seriously hindering crop growth. With our sensors, you can know the real-time carbon dioxide concentration and take action to ensure high quality and high yield of your plants. 


  • Fermentation 

Yeasts feed on sugars and starches, which are abundant in bread dough. They turn this food into energy and release carbon dioxide (CO2)  gas as a result. The carbon dioxide gas made during fermentation is what makes a slice of bread so soft and spongy. But High CO2 content in the gas phase also inhibited the fermentation activity of baker's yeast. In a fermentation process, the CO2 concentration is typically around 1 or 2% of CO2. With our sensors, you can know the concentration of CO2  precisely and help make your fermentation process more successful.





400 to 10000 ppm


400 to 5000 ppm: ±(30+3%MV)


1 ppm

Air Temperature


-40 to +85 °C


±0.2 °C


0.01 °C

Long-term Drift

<0.03 °C/year

Air Humidity


0 to 100 %RH


±1.8 %RH


0.01 %RH

Long-term Drift

<0.25 %RH/year

General Parameters

Product Model




Support Protocol

LoRaWAN v1.0.3 Class A

Built-in Bluetooth

App Tool to change parameters

LoRa Channel Plan

IN865/EU868/US915/AU915/AS923/KR920/RU864 *

Max Transmitted Power Sensitivity



-136dBm@SF12 BW=125KHz

Communication Distance

2 to10km (depending on gateway antenna and environments)

IP Rating


Operating Temperature

0 to +50 °C ( Effective measurement range of CO2)

-40 to +85 °C (CO2 module not included)

Operating Humidity

0 to 90 %RH (non-condensing)

Device Weight



CE / FCC / RoHS(Testing certification in progress)

Battery (Contained in equipment)

Battery Life

Up to 10 years**

Battery Capacity

19Ah (non-rechargeable)

Battery Type

Standard D-size SOCl2 Battery

* Every single device can support 7 frequency plans.

**  This wireless LoRaWAN Temperature and Humidity sensor supports up to 10 years of battery life, but the actual batter life varies from data upload interval, data payload and distance between gateways. If you want to optimize the LoRa battery life, you can choose to send smaller amount of data, send messages less frequently, keep LoRa spreading factor as low as possible. 


LoRa Frequency

Note: No Frequency limitation. Sensor switched to other frequency plans at any time.

S210x Devices are manufactured to support the universal frequency plan from 863MHz ~928MHz in one SKU. That is to say, every single device can support the frequency plans below:

Frequency Plan

Common Name







Sub-band from 1 to 8



Sub-band from 1 to 8



AS923_1, AS923_2, AS923_3, AS923_4










The frequency plan setting is none by default and it will not transmit RF signal until it has been set by App via Bluetooth at the first power-up. And it can be changed to other frequency plans at any time.







KA4*20mm Self-drilling Screw


Waterproof gasket



HSCODE 9031809090
CE Yes