ZEN51 Dry Contact Relay Change Log

Here is a list of the changes and updates we made to the ZEN51 Dry Contact Relay so far.

Original release.
Hardware:

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)

Hardware:

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

Firmware: 1.30

Firmware: 1.40

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

Firmware: 1.50

Firmware: 1.60

Fixed smart bulb behavior after a power outage: the actual status of the relay and the reported status of the relay are both restored correctly now

Firmware: 1.70

Removed the delay when controlling the ZEN51 from the external mechanical switch when parameter 12 is set to value 0 (disable external switch multiple click detection)

Firmware: 1.80

Fixed a bug: The parent (root) device will update its state correctly now on select platforms.
Fixed a bug: Solved an issue with the external switch not triggering the load in some edge cases
Fixed an issue with the connected load flickering on occasion.
Added parameter 13: Separate the input from the output. Please see all settings here.

Firmware: 1.90

This firmware version is compatible with hardware version 1.10 or 1.30 and higher. You can check your hardware version on the back of the ZEN51 module.
Updated parameter names and short descriptions in the Configuration Command Class for improved clarity and consistency.
Fixed an issue with LED behavior when the ZEN51 is included in a Z-Wave network — the LED now follows Parameter 1 settings as expected.
Resolved a mechanical switch issue that occurred when firmware version 1.80 was flashed to hardware version 1.10. The mechanical switch now functions properly on both hardware versions.
Optimized Z-Wave reporting behavior: when Basic Set or Binary Set commands are sent from the Z-Wave controller (Lifeline), the device will no longer send redundant report or notification commands back to the controller.

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!