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Home > ZEN51 Dry Contact Relay > ZEN51 Z-Wave Questions > ZEN51 Dry Contact Relay Change Log
ZEN51 Dry Contact Relay Change Log
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Here is a list of the changes and updates we made to the ZEN51 Dry Contact Relay so far.

VER. 1.0 (released 1/2022)

Original release.

  • 700 Series Z-Wave chip
  • Single pole or direct 3-way capability
  • Pigtail wires for easy installation
  • Wiring limitation: in certain scenarios with too much noise on the wires, the wall switch wouldn't trigger the relay (most commonly when installed in a light fixture more than 30 feet from the wall switch)

Firmware: 1.10

  • 3 switch types to choose from (on/off toggle fixed to position, on/off toggle regular, momentary + impulse 3-way wiring mode for selected 3-way scenarios)

  • Smart bulb mode

  • Scene control (works best with momentary wall switches)

VER. 1.30 (released 6/2022)


  • Fixed the wiring limitations for wall switches not triggering the relay in selected scenarios

Firmware: 1.30

  • Optimized performance in different wiring scenarios

VER. 1.40 (released 8/2022 as OTA)

Firmware: 1.40

  • Fixed reverse behavior for toggle switch with fixed action (always toggle up for on, always toggle down for off)


Your Dry Contact Relay can be updated 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!

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