Enbrighten Zigbee Toggle Switch - High Pitch Noise

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I bought 4 of these Jasco Enbrighten Zigbee toggle switches for my home and they emit a harsh high pitch noise when I turn them on. When I turn them off, I can only hear it when my ear is next to the switch.

I tried these with 2 other switches and they all emit the same high pitched frequency.

I have these connected exactly how its shown in the instructions. (Neutral, Ground, Line & Load)
These are not a 3-way and they connect to 4 recessed ceiling lights. They also connect to the hubitat just fine

Are these just normally like this? Or am I doing some wrong? Does anyone have other recommendations for a toggle style smart switch?

Thank you!

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I recently replaced a bunch of old Z-Wave switches. I used mostly Jasco Enbrighten Zigbee toggle dimmer switches (43090), a few Jasco Enbrighten Zigbee toggle switches (43084) and several Jasco Enbrighten Zigbee toggle add-on switches (46200) for 3-way applications. No issues with any of them, and no unexpected noises.

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High frequency humming is sometimes a function of the load. What is the load? Does it whine when not connected to the load?

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Forgive my ignorance, but what do you mean when you say "What is the load?" I thought line and load just meant power to the switch and then switch to the bulbs respectively.

It stops humming when I turn the switch off, so I guess it doesn't whine when its not connected to the load.

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Gotcha, hoping that it's just how I installed it cause I don't really see better alternatives than these for toggles.

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The load @aaiyar is mentioning is the device connected to the switch - the type of light bulb. There is a possibility that the type of light (of load) you have connected to it is causing the whine somehow...

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Ah, thanks for clarifying. It's connected to 4 led light bulbs recessed in the ceiling @aaiyar

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What’s the brand and wattage of the bulbs? If you disconnect the load, does the high-pitched hum stop?

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May not have enough current draw, might want to try replacing a bulb with an incandescent to see if the humming stops.

(if it stops you may need to add a bypass like: https://www.amazon.com/Aeotec-Bypass-Resistor-switches-flickering/dp/B0716BDNFB)

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