1. 1 Open the battery cover

The battery cover can be opened by gently pulling the Access Pull Tab in the direction shown in ①.

After the first use, the Access Pull Tab can be removed or left in place depending on your preference. If the tab has been removed and the battery cover needs to be opened again, gently open the cover with your finger in the direction shown in ②.

1.2 Remove the battery holder

Remove the Battery Retention Latch and tilt the device in the direction shown in ①. The battery holder will slide out smoothly.

1.3 Install the batteries

Remove the batteries from the packaging and insert them into the battery holder. Make sure the batteries are installed according to the polarity markings (+/-) indicated on the battery slot.

1.4 Secure the batteries

Place the battery holder with the installed batteries back into the device. Reset the Battery Retention Latch in the direction shown in ② to secure the batteries and prevent them from moving.

Close the battery cover to complete the installation.

1.5 Verify power

Short press the multi-function button. If the green LED lights up, the device has been powered on successfully.

2.1 Install the Milesight ToolBox app

Download and install the Milesight ToolBox app on a Bluetooth-enabled smartphone.

2.2 Enable Bluetooth and Location

Enable Bluetooth and Location Services on your smartphone to allow the app to discover nearby devices.

2.3 Connect to the sensor

• Open the Milesight ToolBox app and switch the reading mode to Bluetooth.
• Tap Bluetooth Read to search for nearby devices.
• Select the correct sensor from the list.

The default Bluetooth device name is VS321-XXXXXXX, where XXXXXXX corresponds to characters 5–11 of the device serial number.

Default Bluetooth password: 123456

When connecting for the first time, you will be prompted to create a new Bluetooth password. After the password has been set, the sensor information and configuration options will become available.

Note:

• The Bluetooth connection automatically disconnects after 3 minutes of inactivity. If this occurs, simply reconnect to the sensor.
• The sensor supports only one Bluetooth connection at a time. If a second smartphone connects, the existing connection with the first smartphone is automatically terminated.

2.4 Connect to the Milesight Sensor via Bluetooth 

After the initial setup, tap the Bluetooth icon to search for nearby Milesight sensors. Once the scan is complete, select the correct sensor from the list to establish a connection.

2.5 Open the sensor settings

Once connected, tap the Settings icon to configure the sensor.

2.6 Configure the General settings

In the General tab, apply the following settings:

• Reporting Mode: From Now On
• Reporting Interval: 5 minutes
• Detection Function: People Counting
• Detection Mode: Auto
• Detection Interval: 5 minutes
• Detection Trigger Sensitivity: High
• Detection Region: Select Edit and ensure that one detection area is configured.

When the configuration is complete, tap the Back arrow in the upper-left corner to save the General settings.

2.7 Configure the LoRaWAN settings

Open the Network tab and select LoRaWAN.

Verify that the following settings are configured:

• Join Type: OTAA
• Supported Frequency: EU868
• Spreading Factor: SF7 (DR5)
• TX Power: 0-16 dBm

Leave all other LoRaWAN settings at their factory default values.

2.8 Save the configuration

Tap Write at the bottom of the screen to apply the configuration to the sensor.

The sensor is now configured and ready to be commissioned in the GoBright environment.

3.1 Open the GoBright Mobile app and log in with an account that has Administrator rights. Navigate to: Settings → Admin tools (three stripes).

3.2 In Admin tools you can continue with the sensor commissioning process. 

3.3 Select LoRa Sensors (beta)

3.4 Then select LoRa Sensors

3.5 Select the vendor Milesight

3.6 Select VS321 as the sensor type.

3.7 Remove the batteries from the sensor.

3.8 Press Next to continue.

3.9 Scan the QR code located on the sensor.

3.10 Select the room where the sensor will be installed.

3.11 Press Commission Sensor at the bottom of the screen.

3.12 Insert the batteries back into the sensor.

3.13 Press Done to complete the commissioning process.

The Milesight VS321-868M sensor is now commissioned and ready for use.

Navigate to: Settings → Admin Tools → LoRa sensors (beta) → LoRa sensors

The device will be listed with the device type LoRa sensor.

In the GoBright mobile app you can see the following information:  

• Device EUI
• Coupled room / desk / parking

Navigate to: Settings → Devices → Sensors

The device will be listed with the device type LoRa sensor.

In the GoBright portal, the following information is available for the commissioned LoRa Sensor:

• Coupled room / desk / parking
• Type
• Device EUI

Dimensions

• The illustration below shows the dimensions of the Milesight LoRa sensor, including its length, width, and height, to help you plan the installation.

To ensure accurate detection performance:

• Do not install the device too close to doors or mirrors, as this may affect detection accuracy.
• Ensure the device is mounted facing downward toward the detection area.
• Ensure the surrounding environment is sufficiently lit (>50 lux), while avoiding interference from bright light sources.
• Make sure the entire desired detection area is covered by the sensor.

Install the sensor so that the lens is positioned exactly in the center of the intended detection area.

For rectangular detection areas:

• Align the long side of the lens with the long side of the detection area.
• Align the short side of the lens with the short side of the detection area.

Covered Detection Area

Refer to the detection area diagram below to verify the recommended coverage and ensure the sensor is positioned correctly.