BlueBeacon Advertising Packets format

BlueUp has developed a custom firmware for its BLE beacons (BlueBeacon series) that simultaneously supports iBeacon and Eddystone technologies (with full support of Eddystone specifications, including GATT and EID frame), together with other technologies such as Quuppa for precise localization of beacons and BlueUp Sensors for environment sensing.

The total number of time slots available for these packets is 8: 4 for Eddystone frames, and 4 for other frames (iBeacon, Quuppa, BlueUp Sensors). These packets are individually configurable for data, transmission power and advertising interval, and are always non-connectable.

The format of these packets is strictly compliant to the specifications of each technology:

iBeacon
Eddystone (UID, URL, TLM, EID)
Quuppa: proprietary format
Sensors

Interleaved with (and independently from) these packets, BlueBeacon beacons periodically broadcast an Advertising Packet that contains the following information:

local name Service, with the unique identifier of the device, composed by manufacturer name (“BlueUp”), model number (2 digits) and serial number (6 digits)
battery Service, with estimated status of the battery (expressed in %)
16-bit custom Service, with beacon-status flags, identifying the enabled advertising-packet technologies (iBeacon, Eddystone, Quuppa, BlueUp Sensors)

This Advertising Packet is broadcast at fixed non-modifiable power (-8dBm) and with a periodic interval according the following rule:

v5.x firmware: every 300msec for 5 minutes after power-up (or every disconnection) and, subsequently, every 2 seconds
v6.x firmware: every 300msec for 30sec after power-up (or every disconnection) and, subsequently, every 2 seconds

This solution allows to balance between a short response delay for configuring the beacon after power-up and an ultra-low energy consumption during operating life.

The Advertising Packet allows to uniquely identify the beacon (manufacturer name, model and serial numbers are always printed on the sticker applied on the beacon) and access to its status (battery level, configured packets), without connecting to it. It is noted that this packet is always broadcast (unless the beacon is configured in “Anonymous Mode”), also when no slot is configured for advertising packets (Eddystone, iBeacon, Quuppa or BlueUp Sensors frames).

When (and only when) the beacon is connectable (by default, beacons are always connectable unless configured in “Non-Connectable Mode”), it also broadcast a Scan-Response Packet, that contains the Eddystone configuration GATT service UUID as a 128-bit Service UUID.

BlueUp Advertising Packet

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x06	Fixed	BR/EDR Not Supported / LE General Discoverable
3	0x04	Fixed	AD Length
4	0x16	Fixed	AD Type: Service Data
5	0x0F	Fixed	Battery Service UUID (1st byte)
6	0x18	Fixed	Battery Service UUID (2nd byte)
7	-	Variable	Battery value	Battery %, from 0x64 (100%) to 0x00 (0%)
8	0x04	Fixed	AD Length
9	0x16	Fixed	AD Type: Service Data
10	0x00	Fixed	Custom Service UUID (1st byte)	Custom 16-bit service UUID (0x8800)
11	0x88	Fixed	Custom Service UUID (2nd byte)	Custom 16-bit service UUID (0x8800)
12	-	Variable	Advertised frames flags	Logical OR between: 0x01: Eddystone packet 0x02: iBeacon packet 0x04: Quuppa packet 0x08: BlueUp Sensors packet 0x10: BlueUp Safety packet 0x20: RFU 0x40: Alarm supported 0x80: Alarm active
13	0x11	Fixed	AD Length
14	0x09	Fixed	AD Type: Complete Local Name
15	0x42	Fixed	ASCII Character “B”	Complete Local Name “BlueUp-nn-ssssss”, where -BlueUp is manufacturer name -nn (2 decimal digits) is model number -ssssss (6 dec. digits) is serial number (serial number ranges from 000000 to 999999)
16	0x6C		ASCII Character “l”
17	0x75		ASCII Character “u”
18	0x65		ASCII Character “e”
19	0x55		ASCII Character “U”
20	0x70		ASCII Character “p”
21	0x2D		ASCII Character “-”
22	-	Variable	Model number (ASCII Characters)
23	-	Variable	Model number (ASCII Characters)
24	0x2D	Fixed	ASCII Character “-”
25	-	Variable	Serial Number (ASCII Characters)
26	-		Serial Number (ASCII Characters)
27	-		Serial Number (ASCII Characters)
28	-		Serial Number (ASCII Characters)
29	-		Serial Number (ASCII Characters)
30	-		Serial Number (ASCII Characters)

Model numbers

Model Name	Model Number
Mini	01
Maxi	02
USB	03
Forte / Forte+	04
Tag	05
Board	06
Card	08
Badge - Holder	08
Ultra	09
SafeX / SafeX Lite	10
Bangle	11
Brick	12
TagX	20

Scan - Response packet

Byte	Value (hex)	Property	Description	Comments
0	0x11	Fixed	AD Lenght	Length of packet data
1	0x07	Fixed	AD Type: Flags	Complete List of 128-bit Service Class UUIDs
2	0x95	Fixed	128-bit Service UUID (1st byte)	Eddystone Configuration GATT Service UUID: a3c87500-8ed3-4bdf-8a39-a01bebede295 (little-endian) (see: https://github.com/google/eddystone/tree/master/configuration-service)
3	0xE2		128-bit Service UUID (2nd byte)
4	0xED		128-bit Service UUID (3d byte)
5	0xEB		128-bit Service UUID (4th byte)
6	0x1B		128-bit Service UUID (5th byte)
7	0xA0		128-bit Service UUID (6th byte)
8	0x39		128-bit Service UUID (7th byte)
9	0x8A		128-bit Service UUID (8th byte)
10	0xDF		C128-bit Service UUID (9th byte)
11	0x4B		128-bit Service UUID (10th byte)
12	0xD3		128-bit Service UUID (11th byte)
13	0x8E		128-bit Service UUID (12th byte)
14	0x00		128-bit Service UUID (13th byte)
15	0x75		128-bit Service UUID (14th byte)
16	0xC8		128-bit Service UUID (15th byte)
17	0xA3		128-bit Service UUID (16th byte)

iBeacon

BlueBeacons periodically broadcast an Advertising Packet, with an advertising interval that can be set to a value between 100 msecs and 1 second (at steps of 100 msecs). Default value is 400 msecs, except of BlueBeacon USB where it is 100 msecs). Apple iBeacon technology specifications require 100 msecs.

Advertising Packet is formatted according to iBeacon technology specifications. Advertising Packet contains the identifier of the beacon (20 bytes), which is composed by:

Proximity UUID (16 bytes);
Major number (2 bytes);
Minor number (2 bytes).

Additionally, Advertising Packet contains (last byte) the calibrated RSSI (Received Signal Strength Indicator), which represents the power received by the smartphone at distance of 1 meter, in front of the beacon. This value is used to estimate the proximity from the beacon. Calibrated RSSI is automatically updated when TX power level is modified. By default, the iBeacon measured power value is auto-set by the beacon, based on the used TX power value.

In iOS, Advertising Packet data is only accessible using CoreLocation APIs.

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x06	Fixed	BR/EDR Not Supported / LE General Discoverable
3	0x1A	Fixed	AD Length
4	0xFF	Fixed	AD Type: Manufacturer specific data
5	0x4C	Fixed	Manufacturer data (1st byte)	Apple Company ID
6	0x00		Manufacturer data (2nd byte)	Apple Company ID
7	0x02		Manufacturer data (3rd byte)	Beacon Type
8	0x15		Manufacturer data (4th byte)	Beacon Type
9	-	Variable	Proximity UUID (1st byte)	Proximity UUID
10	-		Proximity UUID (2nd byte)
11	-		Proximity UUID (3rd byte)
12	-		Proximity UUID (4th byte)
13	-		Proximity UUID (5th byte)
14	-		Proximity UUID (6th byte)
15	-		Proximity UUID (7th byte)
16	-		Proximity UUID (8th byte)
17	-		Proximity UUID (9th byte)
18	-		Proximity UUID (10th byte)
19	-		Proximity UUID (11th byte)
20	-		Proximity UUID (12th byte)
21	-		Proximity UUID (13th byte)
22	-		Proximity UUID (14th byte)
23	-		Proximity UUID (15th byte)
24	-		Proximity UUID (16th byte)
25	-	Variable	Major number (1st byte)	Major number
26	-	Variable	Major number (2nd byte)	Major number
27	-	Variable	Minor number (1st byte)	Minor number
28	-	Variable	Minor number (2nd byte)	Minor number
29	-	Variable	Measured Power	RSSI at 1 meter in front of the beacon

Safety

“Safety” packet is an Advertising packet supported by BlueBeacon-series beacons, developed for safety applications. Safety packet contains information about internal data of the beacon, including:

battery status
button activation
motion detection
man-down detection

Safety Packet is formatted according to iBeacon technology specifications, with Minor number used in a custom way. The identifier of the beacon is reduced to 18 bytes, and composed by:

Proximity UUID (16 bytes);
Major number (2 bytes);

Minor number (2 bytes) is used to advertise internal status, with the following format:

Battery level (1 byte);
Safety flags (1 byte)

Additionally, Safety Packet contains (last byte) the calibrated RSSI (Received Signal Strength Indicator), which represents the power received by the smartphone at distance of 1 meter, in front of the beacon. This value is used to estimate the proximity of the beacon. Calibrated RSSI is automatically updated when TX power level is modified.

In iOS, Safety Packet data is only accessible using CoreLocation APIs (as any iBeacon frame).

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x04	Fixed	BR/EDR Not Supported / LE General Discoverable
3	0x1A	Fixed	AD Length
4	0xFF	Fixed	AD Type: Manufacturer specific data
5	0x4C	Fixed	Manufacturer data (1st byte)
6	0x00		Manufacturer data (2nd byte)
7	0x02		Manufacturer data (3rd byte)
8	0x15		Manufacturer data (4th byte)
9	-	Variable	Proximity UUID (1st byte)	Proximity UUID is used to identify the beacon (usually a set of beacons share the same UUID).
10	-		Proximity UUID (2nd byte)
11	-		Proximity UUID (3rd byte)
12	-		Proximity UUID (4th byte)
13	-		Proximity UUID (5th byte)
14	-		Proximity UUID (6th byte)
15	-		Proximity UUID (7th byte)
16	-		Proximity UUID (8th byte)
17	-		Proximity UUID (9th byte)
18	-		Proximity UUID (10th byte)
19	-		Proximity UUID (11th byte)
20	-		Proximity UUID (12th byte)
21	-		Proximity UUID (13th byte)
22	-		Proximity UUID (14th byte)
23	-		Proximity UUID (15th byte)
24	-		Proximity UUID (16th byte)
25	-	Variable	Major number (1st byte)	Major number is used to identify the beacon (there must not be a pair of beacons with the same UUID and major)
26	-	Variable	Major number (2nd byte)
27	-	Variable	Minor number (1st byte)	Battery level
28	-	Variable	Minor number (2nd byte)	Safety flags
29	-	Variable	Measured Power	RSSI at 1 meter in front of the beacon

Battey Level (byte #27)

Contains an encoded battery voltage. Voltage value (in mV) can be conputed using the following relation:

MathJax TeX Test Page $$ Battery Voltage (mV) = BATT \cdot 10 + 1700 $$

Safety Flags (byte #28)

Contains safety flags encoded as follows:

7	6	5	4	3	2	1	0
RFU	RFU	RFU	RFU	MD	MV	BL	BS

BS = Button Pressed (short pressure) flag

BL = Button Pressed (long pressure) flag

MV = Motion detection flag

MD = Man-Down flag

Example: Byte #27

7	6	5	4	3	2	1	0
1	0	0	0	0	0	0	1

Battery = (10000001) base 2 = 0x81 = 129

Battery voltage (mV) = (19 x 10) +1700 = 1290 + 1700 = 2990 mV

Byte #28

7	6	5	4	3	2	1	0
0	0	0	0	0	1	0	0

Safety flags:

MD = 0 (no man-down event detected)
MV = 1 (motion detected)
BL = 0 (no button long detected)
BS = 0 (no button short detected)

Eddystone

Eddystone is an open beacon format from Google for Bluetooth Low Energy (BLE) beacons. The Eddystone Specification includes a number of broadcast frame types: UID, URL, TLM, EID.

Eddystone - UID

The Eddystone – UID frame broadcasts a unique 16-byte Beacon ID, composed by:

10-byte Namespace ID
6-byte Instance ID

The Beacon ID may be useful when mapping a device to a record in an external storage. The Namespace ID may be used to group a particular set of beacons, while the Instance ID identifies individual devices in a group.

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x06	Fixed	BR/EDR Not Supported / LE General Discoverable
3	0x03	Fixed	AD Length
4	0x03	Fixed	AD type: Complete list of 16-bit Service Class UUIDs
5	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
6	0xFE	Fixed	Eddystone UUID (2nd byte)	Eddystone UUID
7	0x17	Fixed	AD Length	Manufacturer data (3rd byte)
8	0x16	Fixed	AD Type: Service Data
9	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
10	0xFE	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
11	0x00	Fixed	Frame Type (UID)
12	-	Variable	Ranging Data	Calibrated TX Power at 0 m
13	-	Variable	Namespace ID (1st byte)	Namespace ID
14	-		Namespace ID (2nd byte)
15	-		Namespace ID (3d byte)
16	-		Namespace ID (4th byte)
17	-		Namespace ID (5th byte)
18	-		Namespace ID (6th byte)
19	-		Namespace ID (7th byte)
20	-		Namespace ID (8th byte)
21	-		Namespace ID (9th byte)
22	-		Namespace ID (10th byte)
23	-	Variable	Instance ID (1st byte)	Instance ID
24	-		Instance ID (2nd byte)
25	-		Instance ID (3d byte)
26	-		Instance ID (4th byte)
27	-		Instance ID (5th byte)
28	-		Instance ID (6th byte)
29	0x00	Fixed	RFU
30	0x00	Fixed	RFU

Eddystone - URL

The Eddystone-URL frame broadcasts a URL using a compressed encoding format in order to fit more within the limited advertisement packet. The Encoded URL field is a variable length field, ranging from 1 up to 17 bytes, depending on the encoded URL length.

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x06	Fixed	BR/EDR Not Supported / LE General Discoverable
3	0x03	Fixed	AD Length
4	0x03	Fixed	AD type: Complete list of 16-bit Service Class UUIDs
5	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
6	0xFE	Fixed	Eddystone UUID (2nd byte)	Eddystone UUID
7	-	Variable	AD Length	Manufacturer data (3rd byte)
8	0x16	Fixed	AD Type: Service Data
9	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
10	0xFE	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
11	0x10	Fixed	Frame Type (URL)
12	-	Variable	Ranging Data	Calibrated TX Power at 0 m
13	-	Variable	URL Scheme
14	-	Variable	Encoded URL (1st byte)	Encoded URL
15	-		Encoded URL (2nd byte)
16	-		Encoded URL (3rd byte)
17	-		Encoded URL (4th byte)
18	-		Encoded URL (5th byte)
19	-		Encoded URL (6th byte)
20	-		Encoded URL (7th byte)
21	-		Encoded URL (8th byte)
22	-		Encoded URL (9th byte)
23	-		Encoded URL (10th byte)
24	-		Encoded URL (11th byte)
25	-		Encoded URL (12th byte)
26	-		Encoded URL (13th byte)
27	-		Encoded URL (14th byte)
28	-		Encoded URL (15th byte)
29	-		Encoded URL (16th byte)
30	-		Encoded URL (17th byte)

Eddystone - TLM

The Eddystone-TLM frame broadcasts telemetry information about the beacon itself, such as battery voltage, device temperature, and count of broadcast packets.

Battery voltage is the current battery charge in millivolts, expressed in 1mV per bit. If not supported (for example in a USB-powered beacon) the value should be zero.
Beacon Temperature is the temperature in Celsius degrees sensed by the beacon and expressed in a signed 8.8 fixed-point notation. If not supported, the value should be set to 0x8000, -128°C.
Advertising PDU Count is the running count of advertisement frames of all types emitted by the beacon since power-up or reboot, useful for monitoring performance metrics that scale per broadcast frame. If this value is reset (e.g. on reboot), the current field must also be reset.
Time since power-up / Reboot is a 0.1 second resolution counter that represents time since beacon power-up or reboot. If this value is reset (e.g. on reboot), the Advertising PDU Count field must also be reset.

Unencrypted Advertisement Format

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x06	Fixed	BR/EDR Not Supported / LE General Discoverable
3	0x03	Fixed	AD Length
4	0x03	Fixed	AD type: Complete list of 16-bit Service Class UUIDs
5	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
6	0xFE	Fixed	Eddystone UUID (2nd byte)	Eddystone UUID
7	0x11	Fixed	AD Length
8	0x16	Fixed	AD Type: Service Data
9	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
10	0xFE	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
11	0x20	Fixed	Frame Type (TLM)
12	0x00	Fixed	TLM Version
13	-	Variable	Battery Voltage (1st byte)	UINT16_BE
14	-	Variable	Battery Voltage (2nd byte)	UINT16_BE
15	-	Variable	Temperature (1st byte)	UINT16_BE, Fixed Point 8.8. Temp [°C] = Temperature / 256
16	-	Variable	Temperature (2nd byte)	UINT16_BE, Fixed Point 8.8. Temp [°C] = Temperature / 256
17	-	Variable	Advertising PDU Count	UINT32_BE
18	-
19	-
20	-
21	-	Variable	Time since Power-on / Reboot	[0.1 s] UINT32_BE
22	-
23	-
24	-

Encrypted Advertisement Format

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x06	Fixed	BR/EDR Not Supported / LE General Discoverable
3	0x03	Fixed	AD Length
4	0x03	Fixed	AD type: Complete list of 16-bit Service Class UUIDs
5	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
6	0xFE	Fixed	Eddystone UUID (2nd byte)	Eddystone UUID
7	0x15	Fixed	AD Length
8	0x16	Fixed	AD Type: Service Data
9	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
10	0xFE	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
11	0x20	Fixed	Frame Type (TLM)
12	0x01	Fixed	TLM Version
13	-	Variable	Encrypted TLM Data
14	-
15	-
16	-
17	-
18	-
19	-
20	-
21	-
22	-
23	-
24	-
25	-	Variable	Salt
26	-	Variable	Salt
27	-	Variable	Message Integrity Check
28	-	Variable	Message Integrity Check

Eddystone – EID

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x06	Fixed	BR/EDR Not Supported / LE General Discoverable
3	0x03	Fixed	AD Length
4	0x03	Fixed	AD type: Complete list of 16-bit Service Class UUIDs
5	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
6	0xFE	Fixed	Eddystone UUID (2nd byte)	Eddystone UUID
7	0x0D	Fixed	AD Length
8	0x16	Fixed	AD Type: Service Data
9	0xAA	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
10	0xFE	Fixed	Eddystone UUID (1st byte)	Eddystone UUID
11	0x30	Fixed	Frame Type (EID)
12	-	Variable	Ranging Data	Calibrated TX Power at 0 m
13	-	Variable	Ephemeral Identifier
14	-
15	-
16	-
17	-
18	-
19	-
20	-

Sensor

BlueBeacon beacons with second-generation firmware (ver. 5.0 or higher), support a new frame type, Sensors packet.

Sensors packet is identified by a 16-byte Service UUID 0x181A (the UUID for standard Environmental Sensing Service defined by Bluetooth specifications has been adopted).

Sensors packet is individually configurable for interval (from 100 msec to 5 secs) and transmission power (from -40dBm to +4dBm).

Sensors packet is accessible using native Bluetooth Low Energy libraries for iOS or Android:

CoreBluetooth for iOS (link)
Bluetooth LE for Android (link)

Sensor - Legacy

Accelerometer Data are present only on beacons having the accelerometer mounted.

Accelerometer Data are Little-Endian encoded in range [-512, 511]. To obtain values in mg unit:
$$mg = value \cdot (4000/1024)$$
Beacons without environmental sensors will set the Temperature, Humidity and Pressure values to all zeros.
Environmental Sensors Data are all Little-Endian encoded.
- Temperature is expressed as a 16-bit signed integer in 0.01 Celsius degrees units
- Humidity is expressed as a 16-bit signed integer in 0.01 percentage units
- Pressure is expressed as a 16-bit signed integer in 0.1 Pascal units

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x06	Fixed	BR/EDR Not Supported / LE General Discoverable
3	-	Variable	AD Length
4	0x16	Fixed	AD Type: Service Data
5	0x1A	Fixed	Environmental Sensing Service UUID
6	0x18	Fixed	Environmental Sensing Service UUID
7	0x6E	Fixed	Temperature UUID	UINT16_LE
8	0x2A	Fixed	Temperature UUID	UINT16_LE
9	-	Variable	Temperature Value	INT16_LE Temp [°C] = Temperature / 100
10	-	Variable	Temperature Value	INT16_LE Temp [°C] = Temperature / 100
11	0x6F	Fixed	Humidity UUIDs	UINT16_LE
12	0x2A	Fixed	Humidity UUIDs	UINT16_LE
13	-	Variable	Humidity Value	UINT16_LE Humidity [%] = Humidity / 100
14	-	Variable	Humidity Value	UINT16_LE Humidity [%] = Humidity / 100
15	0x6D	Fixed	Pressure UUID	UINT16_LE
16	0x2A	Fixed	Pressure UUID	UINT16_LE
17	-	Variable	Pressure Value	UINT16_LE Pressure [Pa] = Pressure / 10
18	-
19	-
20	-
21	0xAC	Fixed	Accelerometer UUID	UINT16_LE
22	0xCE	Fixed	Accelerometer UUID	UINT16_LE
23	-	Variable	Accelerometer X-Axis	UINT16_LE Acc.X [mg] = (AccX)*(4000/1240)
24	-	Variable	Accelerometer X-Axis	UINT16_LE Acc.X [mg] = (AccX)*(4000/1240)
25	-	Variable	Accelerometer Y-Axis	UINT16_LE Acc.Y [mg] = (AccY)*(4000/1240)
26	-	Variable	Accelerometer Y-Axis	UINT16_LE Acc.Y [mg] = (AccY)*(4000/1240)
27	-	Variable	Accelerometer Z-Axis	UINT16_LE Acc.Z [mg] = (AccZ)*(4000/1240)
28	-	Variable	Accelerometer Z-Axis	UINT16_LE Acc.Z [mg] = (AccZ)*(4000/1240)

Sensor - Advanced

Accelerometer data are present only on beacons that have the accelerometer mounter. To configure the beacon to send accelerometer data, the accelerometer has to be configured in “Continuous Sampling” mode.

Beacons can have different sensors, so the length of the packet is variable depending on which sensors are present on the beacon. If a sensor is not present on the beacon, the data related to that sensor will not be included in the packet.

Byte	Value (hex)	Property	Description	Comments
0	0x02	Fixed	AD Lenght	Length of packet data
1	0x01	Fixed	AD Type: Flags
2	0x06	Fixed	BR/EDR Not Supported / LE General Discoverable
3	-	Variable	AD Length
4	0xFF	Fixed	AD Type: Manufacturer Data
5	0x59	Fixed	BlueUp company ID
6	0x08	Fixed	BlueUp company ID
7	0x02	Fixed	Advanced Sensor Packet ID
8	-	Variable	Device ID	Device ID = (Model Number * 1000000) + Serial Number
9	-
10	-
11	-
12	-	Variable	Battery Voltage	Battery [mV] = (Battery *10) +1700
-	0x6E	Fixed	Temperature Sensor ID
-	-	Variable	Temperature	UINT16_BE, Fixed point 8.8 Temp [°C] = Temperature / 256
-	-	Variable	Temperature	UINT16_BE, Fixed point 8.8 Temp [°C] = Temperature / 256
-	0x6F	Fixed	Humidity Sensor ID
-	-	Variable	Humidity	UINT16_BE, Fixed point 8.8 Humidity [%] = Humidity / 256
-	-	Variable	Humidity	UINT16_BE, Fixed point 8.8 Humidity [%] = Humidity / 256
-	0x6D	Fixed	Pressure Sensor ID
-	-	Variable	Pressure	UINT16_BE, Fixed point 8.8 Pressure [kPa] = Pressure / 256
-	-	Variable	Pressure	UINT16_BE, Fixed point 8.8 Pressure [kPa] = Pressure / 256
-	0x6C	Fixed	CO2 Sensor ID
-	-	Variable	CO2 [ppm]	UINT16_BE
-	-	Variable	CO2 [ppm]	UINT16_BE
-	0xAC	Fixed	Accelerometer UUID
-	-	Variable	Accelerometer X-Axis	UINT16_BE, Fixed point 8.8 Acc.X [mg] = Accelerometer X / 256
-	-	Variable	Accelerometer X-Axis
-	-	Variable	Accelerometer Y-Axis	UINT16_BE, Fixed point 8.8 Acc.Y [mg] = Accelerometer Y / 256
-	-	Variable	Accelerometer Y-Axis
-	-	Variable	Accelerometer Z-Axis	UINT16_BE, Fixed point 8.8 Acc.Z [mg] = Accelerometer Z / 256
-	-	Variable	Accelerometer Z-Axis