MultiTracker 11x (0005)¶

30.0.0 - 2026-09-25¶

• MT protocol version 1.17

Added¶

• New properties:

  • 0x8127 - Firmware update info

  • 0x8201 - Debug

  • 0x8104 - Time

  • 0x826A - Measurement Reporting Interval

  • 0x8306 - Start Uplink Quality Test

  • 0x8307 - Uplink Quality Test Result

  • 0x8331 - Flush Backfill

  • 0x838200 - Temperature Backfill

  • 0x838201 - Pressure Backfill

  • 0x838202 - Humidity Backfill

  • 0x838205 - Motion Backfill

  • 0x8807 - TMP116 ID (NIST unique ID)

  • 0xFF01 - Time Sync Retries

• Property 0x8120 - Firmware Update State extended with broadcast flag. This extension is only present during firmware broadcast.

• Firmware gap-fill and resume

• Time sync improvements

• Timestamped data with optional backfill

• Uplink quality test

• Connection ping (secure mode)

• Report all properties when device connects

Changed¶

• In secure mode, measurements are reported as timestamped data

• In secure mode, motion is reported as timestamped data

• In secure mode, motion property is no longer reported

• Require aborting a completed firmware download (state 100/128) before starting a new one

• Report 0x9900 - Button 0 Counter as event/timestamped. This replaces 0x998000 - Button 0 Pressed.

Fixed¶

• Firmware update could not be aborted manually after firmware update timeout

• Factory reset using long button press was not working in service mode

• Potential upstream packet loss

• No-motion event directly followed by new motion event

• Motion could sometimes get stuck at 0

• Firmware update fixes and improvements

Removed¶

• Firmware block timeout for firmware packet received by broadcast

• Device reset after long time disconnected while in Connected mode. Keeping this would break the timestamped data sequence

• Demo mode

29.0.0 - 2025-11-07¶

• MT protocol version 1.13

Added¶

• Secure mode support (connected mode only)

• Service mode (factory reset, DFU mode)

• New properties:

  • 0x8005 - Production Info Extended

  • 0x8008 - Public key

  • 0x800A - Provision

  • 0x800B - Network ID

  • 0x800C - Network Fingerprint

  • 0x800D - Provision Legacy

Changed¶

• New storage mode advertisement format. Adv. name: MT0005/MT0005S (BREAKING)

Fixed¶

• Starting firmware update while another firmware broadcast was in progress

• Button press event reported wrong value length

• Power consumption reduced when in connected mode, but no connection to a parent

28.2.0 - 2025-04-07¶

• MT protocol version 1.10

Changed¶

• Improved storage mode to make device deployment more responsive.

Fixed¶

• Various internal fixes.

28.1.1 - 2024-02-05¶

• MT protocol version: 1.10

Fixed¶

• Device was sometimes not receiving quickly enough during broadcast.

28.1.0 - 2023-12-14¶

• MT protocol version: 1.9

Added¶

• Support for firmware broadcast

• Establishing connections faster

Changed¶

• Reduced button press time to wake up the device from SYSTEM_OFF mode

• Firmware download improvements

• Upstream queue improvements

Fixed¶

• Fixed bug that could cause the device to brick under certain conditions when aborting firmware upgrade.

• Flash data storage issue

28.0.0 - 2023-02-10¶

• MT protocol version: 1.7

Added¶

• Added properties:

  • 0x8303 - Start Upstream Throughput Test

  • 0x8305 - Throughput Test Packet Counter

• Extended route address support

Changed¶

• SYSTEM_OFF mode while sleeping in storage mode

• Motion property reporting updated:

  • Unconnected mode:

    • Advertise 5x on change.

    • Advertise 5x one minute later.

  • In Connected mode:

    • Report motion on change (MT message priority level 3 - Medium)

• Motion report together with other properties on periodic update (20 min).

• Updated offer collection algorithm

• Variant also reported in storage mode

Fixed¶

• Device was responding with generic response packet for unsupported commands which do not have generic response.

• The device was not adding messages in the uplink queue while re-connecting.

• The device was an advertising packet without manufacturing data in connected mode.

• Device was sometimes reporting properties incorrectly

Removed¶

• Removed flags byte (byte 5) from motion (0x8810) property.

27.0.0 - 2022-11-04¶

• MT protocol version: 1.5

Added¶

• Added properties:

  • 0x8260 - Temperature Measurement Reporting

  • 0x8261 - pressure Measurement Reporting

  • 0x8262 - Humidity Intensity Measurement Reporting

  • 0x8806 - Set Pressure Threshold

  • 0x9021 - Offer collection period

• Report pressure high and low interrupt as measurement (0x8801). To disable reporting of pressure high/low, set the pressure threshold (0x8806) to 0.

• Logic to start offer advertisement on button press if the device is in pause (sleep) state. And if the device is in an active state, restart the offer advertisement.

• Add transition counter and flag extension to property 0x8810.

Changed¶

• Report reset cause (0x8102) with the first set bit found in RESETREAS register

• Increase preferred parent connection timeout from 30s to 60s.

• Updated offer selection algorithm

• Improved connection establishment

• Firmware update timeout will only apply during download. If the firmware image is downloaded within given timeout, the timeout will set to zero and the device will wait for a new image to apply.

Fixed¶

• Reading property 0x9100 - Uplink RSSI value returned 0

• Fixes related to connection establishment

Removed¶

• 0x8101 - Uptime is no longer reported.

26.5.0 - 2022-01-06¶

• MT protocol version: 1.1

Added¶

• Advertise heartbeat (0xD048) 30 times at 1-second interval on button press in unconnected mode.

• Added event:

  • 0x8102 - Reset Cause

Fixed¶

• Strange behavior of I2C lines

• Voltage dip on VDD line of the pressure sensor (u2)

Removed¶

• Removed event:

  • 0x8113 - Watchdog reset event

26.4.0 - 2021-12-16¶

• MT Protocol Version: 1.1

Added¶

• Added property:

  • 0x8102 - Reset Cause

Changed¶

• LED indication in storage mode. LED blinks for every button press while device is in storage mode and restart 5 minute timer.

Fixed¶

• High current consumption at power up.

26.3.0] - 2021-09-13¶

• MT Protocol Version: 1.1

Changed¶

• Latency reduced to ~1.5 seconds, making device more responsive to requests.

26.2.0 - 2021-09-06¶

• MT Protocol Version: 1.1

Added¶

• Added Event

  • 0x8113 - Watchdog reset event

Changed¶

• Battery level measurement improvements

• Using accelerometer configuration set in 0x8200 - Accelerometer Configuration in demo mode as well.

Fixed¶

• Issue regarding motion not working if we set “Interrupt 1 blocking time” to 0x00 in 0x8200 - Accelerometer Configuration

26.1.0 - 2021-05-06¶

• MT Protocol Version: 1.1

Changed¶

• Implemented averaging of battery level as mentioned below for more stable level.

  • First battery level update after 10 seconds of power up (no averaging)

  • Second battery level update after 2 minute of power up (average of 12 reading 10 seconds apart)

  • Now on battery level update every 12 hour (average of 12 reading 10 seconds apart)

26.0.0 - 2021-04-26¶

• MT Protocol Version: 1.1

Added¶

• Added property:

  • 0x8340 - Sleep

• Oversampling (16x) support to ADC sampling

Fixed¶

• Issue regarding priority in uplink queue

• Enabled internal pull-up after de-init of TWI peripheral to fix over current issue

25.0.0 - 2020-11-26¶

Initial version with general messages support