Compared

LoRaWAN CO₂ Sensors Compared: MacSync LCO2 vs Milesight EM500-CO2 vs SenseCAP S2103

Three LoRaWAN CO₂ sensors with temperature and humidity on board. They differ in CO₂ range, stated accuracy, whether a mains-powered version exists, and how they are configured and supported.

Macnman product on this page: MacSync LCO2

Side by side

The published figures

Every value is as each manufacturer publishes it, checked on 7 October 2026. Where a page does not state a figure, the cell says so.

Compare	Macnman MacSync LCO2	Milesight EM500-CO2	SenseCAP S2103
CO₂ range	400–2,000 ppm (X1) or 400–5,000 ppm (X2)	400–5,000 ppm	400–10,000 ppm
CO₂ accuracy	±(50 ppm + 5% of reading) · repeatability ±10 ppm · drift ±(5 ppm + 0.5%) per year	±(30 ppm + 3% of reading)	±(30 ppm + 3% of reading), ±10% in the extended range
Temperature and humidity	−30 to +70 °C · ±0.3 °C · 0–100% RH · ±3% RH	Temperature, humidity and barometric pressure included; accuracies not on the page checked	−40 to +85 °C · ±0.2 °C · 0–100% RH · ±1.8% RH
Battery	19 Ah Li-SOCl₂ · about 2 years at 5-minute and 7+ years at hourly reporting	19,000 mAh ER34615, replaceable · up to 10 years	D-size Li-SOCl₂, replaceable · up to 10 years
Mains-powered version	9–36 V DC variants (8512, 8532)	Battery only	Battery only
Enclosure	Glass-filled nylon · IP65, IP67 optional · ~175 g	IP65	IP66
Operating temperature	−40 to +80 °C	Not on the page checked	Not on the page checked
LoRaWAN	v1.0.4 · Class A, Class C via the app · OTAA	Class A	Class A
Bands	IN865 · RU864 · EU868 · US915 · AU915 · KR920 · AS923	Regional variants; see datasheet	Regional variants; see datasheet
Configuration	Maya app over Bluetooth · downlink	NFC via mobile app · downlink	SenseCAP Mate app over Bluetooth
Gateway-free option	MacTalk and Bluetooth versions	—	—
Designed and made in	Designed and manufactured in Pune, India	Milesight, Xiamen, China	Seeed Studio, Shenzhen, China

Figures for the other products are taken from their manufacturers' published datasheets and product pages, checked on 7 October 2026, and may change; check the linked sources before you order. Milesight, Dragino, SenseCAP and RAK are trademarks of their respective owners.

Where each fits

What the table means for your site

Where the MacSync LCO2 fits

Buildings and plants that want the same sensor in battery and DC-powered forms, a range matched to the room (2,000 ppm for offices, 5,000 ppm for plant rooms and labs), an operating range to +80 °C, and Indian manufacture with WPC compliance and local support. Its stated CO₂ accuracy is wider than the other two, so if a tighter published figure matters for a compliance use, read the datasheets closely.

Where the Milesight EM500-CO2 fits

Outdoor and harsh-environment CO₂ monitoring with barometric pressure on board and a tighter stated accuracy, on a replaceable 19 Ah cell. It is battery-only.

Where the SenseCAP S2103 fits

The widest CO₂ range of the three, to 10,000 ppm, with the tightest stated temperature and humidity accuracy, in an IP66 housing. It is battery-only and is configured from a phone app over Bluetooth.

Get a quote

Need a quote for the MacSync LCO2?

Tell us how many you need and where they are going. A product engineer replies within one working day with availability, lead time and the right variant, and will tell you honestly if another unit fits your site better.

Reply within one working day
Designed and built in Pune, India
WPC compliant, RoHS conformant

Questions

Choosing between them

The Milesight EM500-CO2 and SenseCAP S2103 both state ±(30 ppm + 3% of reading); the MacSync LCO2 states ±(50 ppm + 5% of reading) with ±10 ppm repeatability and a published yearly drift figure. For ventilation control, all three resolve the difference between a fresh room and a stale one; for a compliance record, choose on the figure your standard requires.

Offices, classrooms and meeting rooms rarely exceed 2,000 ppm, so the X1 is the usual choice. Labs, plant rooms, warehouses with forklifts and ripening chambers can run higher, which is what the 5,000 ppm X2 is for.

The MacSync LCO2 has 9–36 V DC variants for continuous CO₂ monitoring where power exists. The EM500-CO2 and S2103 are battery-only on the pages checked.