v1.14.2 - 08.10.2025
  - Bugfixes
    - improved OVP detection at device startup

v1.14.1 - 06.10.2025
  - Features
    - better TLS certificate backward compatibility when installing older firmwares
  - Bugfixes
    - fixed ethernet auto negotiation problem

v1.14.0 - 30.09.2025
  - Features
    - added zero voltage switching
    - added 802.1X switch port authentication
    - added OVP info to MQTT telemetry message
    - added more device info to SNMP (Product Name, FW-rev, Hostname, MAC-address)
    - support daylight saving for US/Canada (configurable)
    - additional  Gratuitous ARP packets after PHY uplink
    - support for TLS certificate chains
    - cmdline: added cmds to get external sensor max/min values
    - cmdline: added cmd to reset external sensor max/min values
  - Bugfixes
    - improved OVP functional detection
    - now 'All On/Off' is possible when logged in as user (not admin)
    - improved handling of TLS Session Tickets
    - fixed receive of big DNS query answers
    - fixed setting calib values of legacy 7102 sensor
    - corrected index of port sensor console cmds

v1.13.1 - 14.01.2025
  - Bugfixes
    - re-inserted older JSON OVP signaling to maintain driver compatibility
    - improved FW-Upload - no device restart is longer necessary when upload was aborted externally
    - increase timeouts to improve FW-Upload behavior

v1.13.0 - 26.11.2024
  - Features
    - multi-port switching on events
    - all-off reverse is configurable
    - all-on restart delay sequence
    - IP-watchdog report only function
    - make input toggle counter accessible to all protocols
    - internal watchdog now additionally monitors MQTT operation
    - sensor values configurable in deg F and inHg
    - region specific Software Safeguard
    - updated SSL(TLS), SSH, MQTT libraries to newest versions
  - Bugfixes
    - fixed wrong MQTT JSON Device Data Summary when Sensor 7207 inserted
    - corrected text in web interface showing countdown of coldstart batch sequence
    - fixed wrong units of electrical energy values shown from console cmdline interface
    - SNMP octet header now works with length greater 127
    - resetting manual calib data when external sensor has none stored

v1.11.1 - 22.08.2023
  - Bugfixes
    - 'Choose File' in SSL Cert upload now usable again
    - fixed fallback to user/pass when SSH key denied

v1.11.0 - 01.08.2023
  - Features
    - added session authentication with optional CSRF token in webserver
    - updated SSL(TLS), SSH, jquery-UI libraries to newest versions
    - support for new external sensors with additional inputs
    - calibration data can be stored on external sensors
    - warning when DHCP activated but gets no answer from DHCP server
  - Bugfixes
    - removed Ciphers with AES CBC from TLS and SSH
    - removed SSH Ciphers with SHA1
    - fixed possible buffer problem in webserver

v1.10.2 - 23.02.2023
  - Features
    - extended MQTT telemetry with more electrical data
    - removed 3DES TLS Ciphersuites (SWEET32)
    - extended internal watchdog
  - Bugfixes
    - increased webserver stability when targeted by vulnerability scanners

v1.10.0 - 12.08.2022
  - Features
    - new hardware platform components support
  - Bugfixes
    - DNS resolver stability improved
    - RADIUS improved timing robustness
    - SSH no more sensitive to time-critical spawning sessions
    - Twin Port setting corrected
    - ModbusTCP now shows correctly 0x8000 when sensor data not avail
    - improved checking when uploading new certificates

v1.9.1 - 11.03.2022
  - Features
    - better mail headers for improved SPAM scoring
  - Bugfixes
    - fixed html body when generating HTTP status codes
    - improved error detection when reading electrical values
    - fixed LED blinking when jumping from bootloader into firmware with buttons
    - better SMTP multiline recognition
    - improved FW update over HTTPS slow connections

v1.9.0 - 11.11.2021
  - Features
    - MQTT messaging support
    - Extended sensor messaging trigger: time-interval and value-delta
    - Support for serverside HTTP redirection to HTTPS

v1.8.6 - 28.06.2021
  - Bugfixes
    - Sends SSL encrypted E-mails when HTTPs disabled
    - Browser compatibility issues (IE)

v1.8.5 - 27.05.2021
  - Features
    - config/status maintenance export.json

v1.8.4 - 30.04.2021
  - Bugfixes
    - portmeter: total / resettable energy counter

v1.8.3 - 27.04.2021
  - Features
    - IP filter (ACL) list extended up to 16 entries

v1.8.2 - 12.04.2021
  - Bugfixes
    - E-Mails using CRLF as line separator to avoid 'bare linefeed rejection'

v1.8.1 - 25.03.2021
  - Bugfixes
    - Show sub-unit update status in front panel display
    - Missing line sensor's sum row

v1.8.0 - 01.03.2021
  - Features
    - New action: switch all outlets (by front panel, or browser)
    - New Icon set
    - HTTP server TLS version options (TLS v1.1 / v1.2 / v1.3)
    - HTTP server supports: ECC SSL certificates, keep-alive connections
    - Support for SSH command line interface
    - New messaging options (cli push messages, beeper alert tone options, and more)
    - Adjustable outlet switch alert messaging channels
    - More front panel display options
  - Bugfixes
    - More reliable front panel button handling
    - Concurrent sensor events when supporting beeper alert tones
    - Residual current in front panel display

v1.7.9 - 18.02.2021
  - Bugfixes
    - Increased SMTP TCP timeout

v1.7.8 - 20.10.2020
  - Bugfixes
    - Batchmode option selection in Web-Interface

v1.7.7 - 05.05.2020
  - Features
    - IP watchdog option: outlet reset on ethernet link down
  - Bugfixes
    - NTP status data when NTP client disabled

v1.7.6 - 04.02.2020
  - Bugfixes
    - 'linesensor all show' CLI-cmd
    - Reduced memory usage for Powerport watchdog

v1.7.5 - 06.12.2019
  - Bugfixes
    - possible HTTPS deadlock
    - NTP client clock drift

v1.7.4 - 06.11.2019
  - Bugfixes
    - Large E-Mail password encryption on config save/restore
    - Radius authentication with Cisco ISE

v1.7.3 - 25.10.2019
  - Features
    - Adds OVP status to CLI (Telnet)
  - Bugfixes
    - Telnet tabulator completion
    - Modbus TCP connection handling
    - Timer UI: allow to remove valid-from valid-until dates
    - SMTP: cleanups when remote mail server cancels TCP connection

v1.7.2 - 26.09.2019
  - Bugfixes
    - HTTP Server stability fix on GET Request fragmentation

v1.7.1 - 19.09.2019
  - Bugfixes
    - Update from previous versions might fail

v1.7.0 - 21.08.2019
  - Features
    - Programmable timers
    - New user interface
  - Bugfixes
    - Improved noise immunity on external sensor readings
    - Reduced sensitivity on bank power loss detection to avoid false positive detections

v1.6.2 - 01.10.2018
  - Bugfixes
    - Power-up outlet init when 'Ignore Powerloss' activated

v1.6.1 - 15.08.2018
  - Bugfixes
    - system stability issues

v1.6.0 - 21.03.2018
  - Features
    - Reworked sensor config user interface
    - Sensor threshold status made visible in dashboard sensor tables
    - SNMP MIB / Trap OIDs: optimized for better sensor alert messages
    - Support for combined sensors for temperature/humidity/air pressure
  - Bugfixes
    - DHCPv6 stability

v1.5.2 - 09.08.2017
  - Bugfixes
    - Compatibility of Gude Control for Android and iOS

v1.5.1 - 17.07.2017
  - Bugfixes
    - Configuration export as file
    - Radius authentication with Telnet

v1.5.0 - 10.07.2017
  - Features
    - Radius support
    - Modbus TCP support
    - Key lock for front panel button
  - Bugfixes
    - Ethernet, sensor average values, upload procedure
    - DHCPv6 memory leak

v1.4.5 - 20.04.2017
  - Bugfixes
    - Negative sensor thresholds work properly

v1.4.4 - 29.03.2017
  - Features
    - Integrated option to prevent false positive power loss detection 
  - Bugfixes
    - Ignore IPv6 DNS records when IPv6 enabled, but only link-local prefix available
    - All external sensor values retrievable in console

v1.4.1 - 24.02.2017
  - Features
    - Save or upload configuration file (CLI procedure)
    - Channel for sensor messages selectable (e-mail, SNMP or syslog)
  - Bugfixes
    - General improvements

v1.3.3 - 04.01.2017
  - Bugfixes
    - Reset of outlet energy meter

v1.3.2 - 09.12.2016
  - Bugfixes
    - Memory corruption with SMTP authentication
    - Telnet and serial console syntax

v1.3.0 - 18.11.2016
  - Features
    - Ports can now be switched by configured sensor thresholds
    - Ports can now be switched in master-slave mode by IP watchdog

v1.2.1 - 30.09.2016
  - Bugfixes
    - Allows disabling DHCP without reboot

v1.2.0 - 21.09.2016
  - Features
    - Telnet support
    - Serial console support
  - Bugfixes
    - IP Watchdog

v1.1.3 - 27.06.2016
  - Bugfixes
    - System behaviour for enabled syslog improved

v1.1.2 - 22.06.2016
  - Bugfixes
    - Cleanup of DNS resolver cache after IP ACL config changes

v1.1.1 - 01.06.2016
  - Bugfixes
    - Reset procedures

v1.1.0 - 23.05.2016
  - Features
    - IPv6 manual address settings
  - Bugfixes
    - IPv6 hosts settings

