Flickering lights? It could indicate a driver incompatibility between the bulb and dimmer. 

For the ZEN77 VER 3.0, we have updated to TRIAC as the executive element, which is a leading-edge driver. If your bulb uses MOSFET (trailing-edge) this can cause flickering. You'll want to ensure your lights use the same dimming element as the dimmer to ensure compatibility.

(Earlier versions of the ZEN77, VER 1.0 & 2.0, used MOSFET, a trailing edge driver). 

We recommend reaching out to the light/bulb manufacturer to verify the dimming element in your LED lights to ensure dimming compatibility. You can also try adding a bypass to the load.

You'll also want to confirm that your LED bulbs are labeled as dimmable. On/off LED bulbs are not compatible with dimmers and will not perform correctly. 

Never use a Z-Wave dimmer with smart bulbs unless you disable paddle control on them first. Dimming smart bulbs from a wall dimmer may damage your equipment.

Please reach out to us if you have any more questions about flickering or compatible bulbs!