TCG140-4-v1.030 (Release date 2026-05-29)
   - SMS: Fixed bug in GSM-7 special character decoding
   - Added support for configuring the MQTT keep-alive interval

TCG140-4-v1.029 (Release date 2026-05-19)
   - Web UI optimization

TCG140-4-v1.028 (Release date 2026-04-15)
   - SMS: Improved decoding for messages containing User Data Header (UDH)
   - SMS: Optimized memory for received messages
   - SMS: Fixed bug when setting the Master Phone via SMS command
   - SMS: Optimized transmission timing
   - Web UI: Corrected allowed string lengths for some input fields

TCG140-4-v1.026 (Release date 2025-06-25)
   - SMS: Fixed bug in PDU decoding related to odd-length sender numbers
   - Alarm notification: Fixed bug related to sending alarms (SMS, email, POST, MQTT) from analog inputs

TCG140-4-v1.025 (Release date 2025-06-25)
   - SMS: Fixed bug with SMS alerts after power-up
   - SMS: Optimized SMS format
   - Calibration: Improved setup handling

TCG140-4-v1.024 (Release date 2025-04-15)
   - MQTT: Added client and server certificates support (AWS IoT and other cloud providers compatible)
   - Configuration: Fixed bug affecting backup and restore functionality
   - SMS: Added support for receiving SMS from virtual numbers
   - SMS: Added support for receiving UCS2-encoded SMS messages

TCG140-4-v1.023 (Release date 2025-02-19)
   - Fixed a bug related to the 'unumf' command

TCG140-4-v1.022 (Release date 2025-01-14)
   - MQTT: Added a setting for Relays state on connection loss. When the connection with the broker is lost, the relays are set according to the configured setting.
   - MQTT: Optimized error messages.
   - MQTT: The "Server" field length has been increased from 63 to 127 characters.
   - MQTT: Fixed a bug related to disabling MQTT and disconnecting from the server.
   - Website: Optimization related to caching of the index.htm file.

TCG140-4-v1.021 (Release date 2024-10-24)
  - Added support for MQTT Subscribe
  - Included relays in MQTT Publish
  - Extended field length for email addresses, username, and password to 127 characters 

TCG140-4-v1.019 (Release date 2024-08-30)
  - Calibration optimization

TCG140-4-v1.018 (Release date 2024-05-9)
  - status r1, status r2, status r3 and status r4 HTTP comands fixed

TCG140-4-v1.017 (Release date 2024-01-19)
  - Option for user header in HTTP Post added

TCG140-4-v1.016 (Release date 2024-01-10)
  - HTTP Post optimization

TCG140-4-v1.015 (Release date 2023-12-12)
  - Added option to use Server Name Indication (SNI) for HTTPS post

TCG140-4-v1.014 (Release date 2023-09-25)
  - HTTP Post optimization

TCG140-4-v1.013 (Release date 2023-08-15)
  - Firmware update optimization
  - SMS commands optimization

TCG140-4-v1.012 (Release date 2023-07-17)
   - Mobile network connection reset optimization

TCG140-4-v1.011 (Release date 2023-05-12)
   - SMS commands optimization

TCG140-4-v1.010 (Release date 2023-05-03)
   - SMS setup and commands optimization

TCG140-4-v1.009 (Release date 2023-04-25)
   - SMS setup and commands optimization

TCG140-4-v1.007 (Release date 2023-03-22)
   - display sensor values with 3 decimal places
   - added a notification in case of a sensor lost

TCG140-4-v1.006 (Release date 2022-12-08)
   - system web page optimization

TCG140-4-v1.005 (Release date 2022-10-21)
   - firmware update optimization

TCG140-4-v1.004 (Release date 2022-09-26)
   - data connection optimization

TCG140-4-v1.002 (Release date 2022-06-23)
   - relays setup optimization