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ZEN23 Toggle Switch Change Log
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Here's where you'll find the changes and updates we made to the ZEN23 switch model so far.

VER. 1.0 (released 6/2016)

Original release.

  • Did NOT include neutral jumper or short screws for wall plate
  • Implemented the classic 3-way functionality with a dedicated add-on switch required (NO direct 3-way, do NOT connect to regular on/off switches)

Firmware: 20.16

  • No advanced settings available

VER. 1.01 (released 12/2016)

Firmware: 20.15

  • Added advanced setting for toggle control

VER. 2.0 (released 9/2017)


  • Added neutral jumper and short screws for wall plate
  • Added Direct 3-way solution (no add-on switch needed)

Firmware: 1.05

  • Added advanced settings for toggle control

VER. 3.0 (released 4/2019)


  • Updated back cover for easier installation (larger terminal holes)
  • Terminal screws arrive loose (unscrewed) for easier installation
  • Updated wall plate screw installation design (added more room for the screw to fit in easily)
  • Added foam to packaging

Firmware: 3.0

  • Added scene control (2 triggers only)
  • Changed association settings to send separate reports for manual and Z-Wave control
  • Added S2 security
  • Added OTA firmware updates
  • Added Built-in Timer
  • Added the ability to reset the switch to factory settings from the device directly
  • Added the ability to control load by toggling the toggle up or down
  • Added a setting to control status after power failure

VER. 3.01 (released 6/2019)

Firmware: 3.01

  • Added full scene control
  • Added the ability to disable local control


VER. 3.03 (released 9/2019)

Firmware: 3.03

  • Reduced manual control delay related to scene control functionality

VER. 3.04 (released 12/2019)

Firmware: 3.04

  • Added 3-way switch type setting to use momentary switches (like the ZAC99) in 3-way, 4-way, or 5-way set-ups without configuration limitations

VER. 3.05 (released as OTA 3/2020)

Firmware: 3.05

  • Added the ability to adjust reporting behavior for disabled physical control

VER. 4.0 (released 9/2020)


  • Removed side heat sink tabs

Firmware: 4.0

  • Changed the toggle sequence for enabling smart bulb mode (aka disabling the relay / physical control) to 4-down-and-hold for 10 seconds (toggle down-down-down-down'n'hold)

VER. 4.01 (released 10/2020 as OTA)

Firmware: 4.01

  • Changed power outage behavior in smart bulb mode
  • Applied timers to status reports in smart bulb mode
  • Improved single-tap and long-tap timing for scene control triggers

VER. 4.03 (released 9/2021 as OTA)

Firmware: 4.03

  • Corrected the supervision command class for S2 implementation


This model has been discontinued and replaced with the ZEN73 switch which wires differently in 3-way and 4-way installations than the ZEN23 model (always follow the correct diagram from the manual when installing your switches). No further updates are planned for the ZEN24 device.

If you have version 3.0 or higher, your switch can be upgraded via OTA firmware updates. you can access all firmware files here once you register your product and create an account here. Questions? Just reach out to our support, we're here 7 days a week!

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