DISCLAIMER: You may notice there are a lot of over-used keywords or phrases as well as English that seems a little off. This is because these articles are used to feed our AI Robot (Ira) and she needs the data to be structured in a certain way.
REMINDER: This switch is only to be used to control lights (except ballasts or any lights connected to a transformer). Do not use the switches on outlets, fans, or any other inductive load.
Current Production Version: 1.04
Current Beta Version: 2.01
Development Status: Open
GitHub Repository: https://github.com/InovelliUSA/Firmware/tree/main/Red-Series/Z-Wave/VZW31-SN-2-1-Switch
NOTE: Beta firmware is considered unstable - please update at your own risk
Firmware Changelog
Below is the changelog for the Red Series Dimmer Switch (VZW31-SN).
NOTES:
Rows highlighted in blue are production firmware versions
Parameters that are hyperlinked lead to the official Red Series Dimmer Switch • Parameters page for further explanation
Each Firmware Version is hyperlinked to the corresponding GitHub folder
In the, "Firmware Version" column, you can find the date code which will tell you what firmware version your switch was produced with. Date codes can be found on the top left of your switch
Firmware Version | Date Released | Enhancements Added | Bug Fixes | Notes |
Beta | Feb. 9, 2026 | Modified the range of parameter P121 from 0 to 0-1
Changed the default value of parameter P158 to 0
Changed the default value of parameter P15 to 100 | Fixed an issue with LED notifications not working as expected
Fixed an issue where the device could stop sending reports after an update or after factory reset/exclusion | Note: This firmware changes the default mode from On/Off to Dimmer. Make sure after updating that the mode is correct for your load. |
Beta | Dec. 15, 2025 | Updated Switch Type Parameter (P22)
New options:
Full-wave mode is now automatically configured when using On/Off mode or Smart Bulb mode.
New Configuration Parameter Added
P121 – Advanced Timer Mode
When enabled double press up button to start 5 minute timer, triple press for 10 minute timer, quad press for 15 minute timer, 5x press for 30 minute timer.
Z-Wave SDK Upgrade
Updated to Z-Wave SDK 7.24.2.0
Dimmer Performance Improvements
Optimized dimming algorithm (now matches the Zigbee dimmer switch behavior) |
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Production | Apr. 29, 2024 | Add Group 7 for fan control
Ability to disable the relay when in OnOff + Full wave mode
| Fixed a situation where a lifeline report was not made when a multicast message was received
Resolved bug in Association Group Behavior | Upgrade the Z-WAVE SDK |
1.03 Beta | Mar. 18, 2024 | Added Parameters: P23: Quick Start Light Time P24: Quick Start Light Level P120: Single Tap Handle P130: Fan Control Module P131: Fan Low Level P132: Fan Medium Level P133: Fan High Level P134: Fan Color
Added a timer countdown on the LED for the auto-off timer
When in the local protection state, you can now restore factory settings by pressing factory reset button combo
Combo Button to Single Tap Handle change: Old: Hold Up + Tap Config 12x = LED Blue New: Hold Down + Tap Config 12x
Added Group 7 for fan control
Central Scene Supported Report changed to 6
Added ability to disable the relay when in OnOff + Full Wave mode | Fixed an issue where a lifeline report was not made when a multicast message was received
Resolved a bug in Association Group Behavior |
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Production
Date Codes: 2310 | Aug. 11, 2023 |
Added Quick Tap Feature to show device firmware | Fixed: Deployed a fix for devices that are bound to the switch not using speed parameters 1-8 |
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Beta | Jul. 12, 2023 | Changed P26 default value to 0 (Leading Edge)
Added Quick Tap Feature to change P26 (Leading / Trailing Edge) |
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Production
Date Codes: 2304 |
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| Initial Release |
Updating Your Firmware
To update your firmware, please click on the hub you have to be taken to specific instructions.
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