Temperature
Temperature, humidity, light, PIR motion and CO2.

5-in-1 IAQ Sensor
The AM305L is a 5-in-1 IAQ Sensor. It adds carbon dioxide monitoring to temperature, humidity, light and occupancy sensing, giving a fuller picture of indoor air quality and comfort.
Dispatch and lead time are confirmed in the quote.
Manufacturer warranty24 months
Overview
The AM305L is a screen-free 5-in-1 sensor in the Milesight AM300 series. It adds carbon dioxide monitoring to temperature, humidity, light and occupancy sensing, giving a fuller picture of indoor air quality and comfort.
Five sensors cover temperature, relative humidity, ambient light, PIR motion and CO2. NDIR measurement keeps CO2 readings accurate and stable, a key marker of ventilation and crowding.
With no display, the AM305L blends quietly into any interior where a visible screen is unwanted. A built-in traffic-light indicator still shows status at a glance.
Milesight D2D support lets the AM305L talk directly to other Milesight devices without a gateway, enabling ultra-low-latency local automation such as ventilation triggers when CO2 rises.
Without a screen to drive, the AM305L reaches up to 11 years of battery life from four ER14505 cells, or runs on Type-C power. A smart power-saving mode pauses updates while a room stays vacant.
One-tap NFC configuration through the Milesight ToolBox app makes setup quick. Wall mounting with screws or 3M tape keeps installation flexible.
Temperature, humidity, light, PIR motion and CO2.
Screen-free, discreet design.
Battery life up to 11 years.
Milesight D2D for gateway-free control.
Traffic-light status indicator.
One-tap NFC configuration.
LoRaWAN and Milesight ecosystem.
Temperature ± 0.2 °C accuracy.
Technical data
| Specifications | |
|---|---|
| Technology | LoRaWAN®, Milesight D2D |
| Antenna | Internal antenna |
| Frequency | CN470/RU864/IN865/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx Power | 16 dBm (868 MHz) / 22 dBm (915 MHz) / 19 dBm (470 MHz) |
| Sensitivity | −137 dBm @300bps |
| Mode | OTAA/ABP Class A |
| Specifications | |
| Operating Principle | Digital CMOSens technology (MEMS) |
| Range | −20 °C ~ +60 °C |
| Accuracy | Typ. ± 0.3 °C (−20 ~ 0 °C), ± 0.2 °C (0 ~ 60 °C) |
| Resolution | 0.1 °C |
| Specifications | |
| Operating Principle | Digital CMOSens technology (MEMS) |
| Range | 0% RH ~ 100% RH |
| Accuracy | Typ. ± 2% RH (25 °C) |
| Resolution | 0.5% RH |
| Specifications | |
| Operating Principle | Nondispersive infrared (NDIR) |
| Range | 400 ~ 5000 ppm |
| Accuracy | ± (30 ppm + 3% of reading) |
| Resolution | 1 ppm |
| Specifications | |
| Operating Principle | Passive infrared (PIR) |
| Detection Range | 80 ° horizontal, 55 ° vertical, 3 m |
| Status | Vacant / trigger |
| Specifications | |
| Operating Principle | Photodiode |
| Range | 0 – 60000 Lux |
| Report Mode | Illuminance value or level (0 – 5) |
| Accuracy | ± 30% of reading |
| Specifications | |
| Display | Not supported (screen-free) |
| Button | 1 × power button + 1 × reset button |
| LED | 1 × traffic-light status indicator |
| Configuration | Mobile app via NFC, downlink |
| Advanced Features | Calibration, threshold alarm, data storage (4,320 entries), data retransmission, button lock, D2D data transmission |
| Specifications | |
| Power Supply | 4 × 2700 mAh ER14505 Li-SOCl2 replaceable batteries, or 5V/1A Type-C |
| Battery Life | ~11 years (SF7, EU868 & US915); ~6.3 years (SF10, EU868); ~3.7 years (SF10, US915) |
| Operating Temperature | −20 °C ~ +60 °C |
| Relative Humidity | 10% – 90% (non-condensing) |
| Ingress Protection | IP30 |
| Housing & Colour | PC + ABS (V0), white |
| Dimensions | 100.8 × 114 × 22 mm |
| Installation | Wall mounting via 3M tape or screws |
| Specifications | |
| Regulatory | CE, CE (RED), FCC |
| Environmental | RoHS |
No specification rows match the filter.
Applications
Offices track comfort, occupancy and CO2 to keep air fresh and energy use down. The screen-free body keeps interiors clean and unobtrusive.
Classrooms watch CO2 and presence to protect focus and health. D2D control can boost ventilation automatically when levels climb.
Clinics and care homes keep rooms ventilated and comfortable. Long battery life reduces maintenance across many spaces.
Meeting rooms and public spaces maintain healthy CO2 levels. LoRaWAN enables wide, low-power coverage with minimal wiring.
Documentation
Questions
4 × 2700 mAh ER14505 Li-SOCl2, according to the specification.
IP30, according to the specification.
–20 … +60 °C, according to the specification.
80 ° horizontal, 55 °, according to the specification.
Request a quote
Tell us the quantity and the delivery country. We reply within one working day with the price, stock at the nearest warehouse and the dispatch date.
Manufacturer warranty24 months
Europe & United Kingdom
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