FAQs Frequently Asked Questions

What does the Milesight AM319 measure?

The Milesight AM319 is a 9-in-1 indoor air quality sensor. It measures temperature, humidity, light, CO₂, HCHO or O₃ depending on model, TVOC, barometric pressure, PM2.5, PM10 and motion. It displays readings on an E-Ink screen and sends data using LoRaWAN®.

Is the Milesight AM319 suitable for facilities management?

Yes. The AM319 is suitable for facilities management, indoor air quality monitoring, smart buildings, offices, classrooms, healthcare spaces, retail areas and public buildings. Milesight lists offices, stores, classrooms and hospitals as typical use environments.

Does the AM319 support both HCHO and O₃?

No. Milesight states that the AM319 can support either HCHO or O₃, not both in the same unit. The version can be identified by checking the part number on the device label.

Can the HCHO or O₃ sensor be replaced?

Yes. Milesight states that the HCHO or O₃ sensor connects to the mainboard using a pluggable interface, allowing the old sensor to be unplugged and replaced.

Does the AM319 measure occupancy?

Yes. The AM319 includes PIR motion detection and reports Occupied or Vacant status. Milesight notes that if an exact people count is required, a people-counting sensor such as the VS121 or VS132 is more appropriate.

Does the AM319 have a screen?

Yes. The AM319 has an E-Ink screen for real-time local display of indoor air quality and comfort readings. The AM300 series screen updates data every 1 minute, and the AM319 performs a full-screen refresh every 30 minutes to reduce ghosting.

Can the E-Ink screen be turned off?

Yes. Milesight states that the E-Ink screen can be turned off using ToolBox or a downlink command.

Can the display modes be customised?

Yes. Milesight documentation states that the AM300 series screen display mode can be adjusted via ToolBox or downlink command, and display content can be configured through downlink commands.

Does the AM319 have traffic light air quality indication?

Yes. The AM319 includes a traffic light indicator and buzzer for device status and threshold alarms. Milesight’s AM300 hardware guide explains that the traffic light can indicate air quality levels based on threshold settings, with green, yellow and red states.

Does the AM319 support LoRaWAN?

Yes. The AM319 uses LoRaWAN® wireless transmission and supports OTAA/ABP Class C operation. It is compliant with standard LoRaWAN gateways and network servers.

Can the AM319 work with other brands of LoRaWAN gateways?

Yes. Milesight states that the AM319 is compliant with standard LoRaWAN gateways and network servers, so it can be used in standard LoRaWAN deployments when configured correctly.

Which LoRaWAN network servers can the AM319 connect to?

The AM319 can be integrated with standard LoRaWAN network servers. Milesight’s FAQ references connection to network servers such as TTN, ChirpStack, Actility and Senet, and Milesight’s datasheet states compatibility with standard LoRaWAN gateways and network servers.

Can the AM319 be used with a Milesight UG65 gateway?

Yes. The AM319 can be used with Milesight LoRaWAN gateways such as the Milesight UG65, as well as other standard LoRaWAN gateways and network servers.

How often does the AM319 sample sensor data?

Milesight lists fixed sampling intervals for the AM319: temperature and humidity every 1 minute, CO₂ every 1 minute, illuminance every 10 seconds, PIR motion every 5 seconds, TVOC every 1.5 minutes, barometric pressure every 1 minute, PM2.5 and PM10 every 3 minutes, and HCHO/O₃ every 30 seconds.

Can the AM319 measure CO₂ below 400 ppm?

Milesight’s AM Series FAQ states that AM319 only supports displaying 400 to 2000 ppm values. For general Milesight CO₂ sensors, values below 400 ppm may be displayed/uploaded if genuinely measured, but the AM Series FAQ specifically notes the AM319 display limitation.

Does the AM319 need CO₂ calibration?

Milesight states that its CO₂ sensors are calibrated before delivery, but accuracy can be affected by sensor ageing, installation and environment. Calibration can be carried out using Milesight ToolBox via NFC, ToolBox software via Type-C, or remotely through LoRaWAN downlink commands.

How often should the CO₂ sensor be calibrated?

Milesight says the calibration interval depends on the measuring environment. In ventilated environments, calibration may be carried out around once per year; in poorly ventilated environments, Milesight suggests every 3–6 months.

How should the AM319 be installed for accurate CO₂ readings?

Milesight recommends installing CO₂ sensors at human breathing height, at least 1.5 m from the floor. The sensor should not be mounted upside down and the air inlet should not be blocked.

Can the AM319 store data locally?

Yes. The AM319 supports local historical record storage and data retransmission to help prevent data loss.

Does data retransmission work if the AM319 loses power?

Milesight states that data retransmission can work when the device loses connection with the gateway or server for a period of time, but it does not work for sudden changes such as the sensor losing power or LoRaWAN parameters being changed.

Can the AM319 be configured remotely?

Yes, with partial support. Milesight states that AM Series devices can be configured remotely using downlink commands, depending on the relevant command support in the user guide.

Can TITAN supply and configure the Milesight AM319 in Ireland?

Yes. TITAN can supply the Milesight AM319 for Irish indoor air quality and facilities monitoring projects, with configuration, online setup support and remote technical assistance.