SenseCAP S2103 – LoRaWAN CO2, Temperature and Humidity Sensor

The SenseCAP S2103 is a wireless LoRaWAN sensor designed for accurate measurement of CO₂ concentration, air temperature, and humidity in outdoor environments. It captures CO₂ levels between 400 and 10,000 ppm, temperatures from -40°C to 85°C, and relative humidity from 0 to 100 %RH (non-condensing), making it suitable for industrial environmental monitoring.

This sensor is built for longevity and deployment flexibility. It’s housed in an IP66-rated enclosure to withstand harsh weather, from high UV exposure to rain and dust. It transmits data reliably over LoRaWAN with a range of up to 2km in urban areas and 10km in line-of-sight conditions. Power comes from a standard Li-SOCl₂ D-size battery with up to 10 years of service life, reducing maintenance needs.

Setup and configuration are handled via built-in Bluetooth using the SenseCAP Mate app. The sensor supports OTA updates and can be integrated into LoRaWAN networks such as The Things Network, Loriot, or Chirpstack. Remote data access and device management are available through the SenseCAP Portal, which supports MQTT and HTTP APIs for custom integration.

The S2103 has been reliability-tested for performance under extreme temperature swings, water exposure, freezing, and long-range communication, ensuring dependable operation throughout its service life. It also supports time interval settings and threshold alerts through the app interface.

Videos

Network Example

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Features

• Measures CO₂ concentration (400–10,000 ppm), temperature (-40°C to 85°C), and humidity (0–100 %RH)
• Battery-powered with up to 10 years of service life (standard Li-SOCl₂ D-size battery)
• Long-range LoRaWAN® transmission: 2km in urban areas, up to 10km line-of-sight
• Compatible with LoRaWAN® v1.0.3 Class A and major network servers (e.g. TTN, Loriot, Chirpstack)
• Built-in Bluetooth for quick configuration and OTA updates via SenseCAP Mate App
• Industrial-grade IP66 enclosure for outdoor use in harsh environments
• Tested for waterproofing, temperature cycling, freezing, and long-range communication reliability
• Supports MQTT and HTTP API via SenseCAP Portal for data access and remote device management
• No-code setup process with scan-and-play configuration
• Set thresholds, time intervals, and alerts through the app (threshold/alert features coming soon)

Specifications

CO₂
Range	400 to 10000 ppm
Accuracy	±(30 ppm +3% of reading) (extended range ±10% of reading)
Resolution	1 ppm
Air Temperature
Range	-40 to +85 °C
Accuracy	±0.2 °C
Resolution	0.01 °C
Long-term Drift	<0.03 °C/year
Air Humidity
Range	0 to 100 %RH
Accuracy	±1.8 %RH
Resolution	0.01 %RH
Long-term Drift	<0.25 %RH/year
General Parameters
Product Model	S2103
Microcontroller	Wio-E5
Support Protocol	LoRaWAN v1.0.3 Class A
Built-in Bluetooth	App Tool to change parameters
LoRaWAN Channel Plan	IN865/EU868/US915/AU915/AS923/KR920/RU864 *
Max Transmitted Power	19dBm
Sensitivity	-136dBm @ SF12 BW=125KHz
Communication Distance	2 to 10km (depending on gateway antenna and environment)
IP Rating	IP66
Operating Temperature	0 to +50 °C (Effective CO₂ measurement range) -40 to +85 °C (CO₂ module not included)
Operating Humidity	0 to 90 %RH (non-condensing)
Device Weight	285g
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 sensor supports up to 10 years of battery life, but the actual battery life varies from data upload interval, data payload, and distance between gateways.

** We have updated the battery life table, which should provide you with a better estimate of the actual battery life of your device. We recommend that you refer to the updated table when making any judgment or decision related to the battery life of your device.

Resources

• Product Wiki
• Connect S210X Sensors to Azure IoT Central User Guide
• Battery Life Prediction Table
• SenseCAP S210X Decoder
• Product Number: Seeed 114992868

LoRaWAN Frequency

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 – the sensor can be switched to other frequency plans at any time:

Frequency Plan	Common Name	Sub-band
EU863-870	EU868	–
US902-928	US915	Sub-band from 1 to 8
AU915-928	AU915	Sub-band from 1 to 8
AS923	AS923	AS923_1, AS923_2, AS923_3, AS923_4
IN865-867	IN865	–
KR920-923	KR920	–
RU864-867	RU864	–

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

Package Contents

• 1x SenseCAP S2103 – LoRaWAN CO2, Temperature and Humidity Sensor
• 2x Bracket
• 4x KA4x20mm Self-drilling Screw
• 1x Quick Start Guide