Temperature
Temperature, humidity, light and PIR motion.
AM304L Milesight 4 in 1 IAQ Sensor
4-in-1 IAQ Sensor
Order codeAM304L In stockOfficial distributor
The AM304L is a 4-in-1 IAQ Sensor. The AM304L is the entry model of the Milesight AM300 series, a screen-free 4-in-1 sensor that tracks indoor temperature, humidity, light and occupancy.
- Measures80 ° horizontal, 55 °
- LoRaWANCN470/RU864/IN865/EU868/US915/
- Power4 × 2700 mAh ER14505 Li-SOCl2
- ProtectionIP30
- Operating–20 … +60 °C
- In stockVilnius warehouse · EU
- In stockLondon warehouse · UK
Dispatch and lead time are confirmed in the quote.
- Official distributor
- 17+ years in IoT
- Installation support
Manufacturer warranty24 months
Overview
AM304L overview
Overview
The AM304L is the entry model of the Milesight AM300 series, a screen-free 4-in-1 sensor that tracks indoor temperature, humidity, light and occupancy. It gives facility teams a clear view of comfort and space usage to support healthier, more efficient buildings.
Sensing
Four sensors cover the essentials: temperature, relative humidity, ambient light and PIR motion. Together they show whether a room is comfortable and in use, all from a single compact device.
Discreet Design
With no display, the AM304L blends quietly into any interior where a visible screen is unwanted. A built-in traffic-light indicator still shows status at a glance.
Direct Control
Milesight D2D support lets the AM304L talk directly to other Milesight devices without a gateway, enabling ultra-low-latency local automation such as lighting or HVAC triggers.
Power
Without a screen to drive, the AM304L reaches up to 14 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.
Setup
One-tap NFC configuration through the Milesight ToolBox app makes setup quick. Wall mounting with screws or 3M tape keeps installation flexible.
Key features
Screen-free
Screen-free, discreet design.
Battery life up to 14
Battery life up to 14 years.
Milesight D2D for gateway-free control
Milesight D2D for gateway-free control.
Traffic-light status indicator
Traffic-light status indicator.
One-tap NFC configuration
One-tap NFC configuration.
LoRaWAN and Milesight ecosystem
LoRaWAN and Milesight ecosystem.
Temperature ± 0.2 °C accuracy
Temperature ± 0.2 °C accuracy.
Technical data
AM304L specifications
| 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 | 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 | ~14 years (SF7, EU868); ~12.5 years (SF7, US915); ~7.5 years (SF10, EU868) |
| 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
AM304L applications
Workplace
Offices monitor comfort and desk occupancy to optimise space and energy use. The screen-free body keeps interiors clean and unobtrusive.
Education
Classrooms track temperature, humidity and presence for healthier learning. D2D control can drive lighting or ventilation automatically.
Healthcare
Clinics and care homes keep rooms within comfortable, safe ranges. Long battery life reduces maintenance across many spaces.
Public Buildings
Libraries and public spaces maintain healthy indoor conditions. LoRaWAN enables wide, low-power coverage with minimal wiring.
Documentation
AM304L downloads
Questions
AM304L questions and answers
How is the AM304L powered?
4 × 2700 mAh ER14505 Li-SOCl2, according to the specification.
What ingress protection does the AM304L have?
IP30, according to the specification.
What is the operating temperature of the AM304L?
–20 … +60 °C, according to the specification.
What measures does the AM304L provide?
80 ° horizontal, 55 °, according to the specification.
Request a quote
AM304L price and lead time
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.
European headquarters+370 655 51654[email protected]
United Kingdom branch+44 7425 726932[email protected]
- Company code306755852
- VAT numberLT100017217417
- Official distributor
- 17+ years in IoT
- Installation support
Manufacturer warranty24 months
