AM103L CO₂ Sensor (no display)

Built for air quality & co₂.

A three-in-one indoor air quality sensor. CO₂ as a ventilation proxy, plus temperature and humidity — the core signals for healthy classrooms and offices. Wireless and battery-powered, live on a dashboard within minutes of mounting. LoRaWAN decoder: Milesight AM103L payload decoder & codec (GitHub)

CO₂ range

400–5,000 ppm

CO₂ accuracy

±(30 ppm + 3% of reading)

CO₂ resolution

1 ppm

CO₂ method

Non-dispersive infrared (NDIR)

Temperature range

−20 °C to +70 °C

Temperature accuracy

±0.3 °C (0 °C ~ +70 °C), ±0.6 °C (−20 °C ~ 0 °C)

Temperature resolution

0.1 °C

Humidity range

0–100% RH

Humidity accuracy

±3% RH (10–90% RH), ±5% RH (<10% or >90% RH)

Humidity resolution

0.5% RH

Display

None

Battery

2 × 2,700 mAh ER14505 Li-SOCl₂, replaceable

Battery life

~4 years (10-min interval)

LoRaWAN frequency

CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1&2&3&4

TX power

16 dBm (868 MHz) / 22 dBm (915 MHz) / 19 dBm (470 MHz)

Dimensions

68 × 65 × 20.5 mm

IP rating

IP30

Operating temperature

−20 °C to +60 °C

SKU

AM103L-EU868

A device on its own, or part of the bigger picture.

Buy this device and run it yourself, or have it monitored on the Planetic platform — live dashboards, standards tracking and automatic alerts, with the compliance evidence kept for you.

Good to know.

Do I need anything else to use this device?

Every LoRaWAN sensor needs a gateway to reach the internet. One gateway covers a whole building — the Milesight UG65 is the standard choice for most sites. The gateway itself does not need a sensor to run.

Is the price ex VAT?

Yes — all prices shown are ex VAT. VAT is added at checkout where applicable.

Can I have it monitored on the Planetic platform?

Yes. Buy the device outright and run it yourself, or have it monitored on Planetic — live dashboards, standards tracking and automatic alerts, with compliance evidence kept for you.