Zooz Momentary In-Wall Switch ZAC99 for Z-Wave Dimmer Modules


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    • 1-button momentary switch (press a single paddle in sequence for on/off and hold for dimming)
    • Adds dimming capability to your favorite Z-Wave dimmer module from the wall switch
    • Use it with the Fibaro Dimmer to complete multi-point installations without neutral
    • Slim design leaves enough space in the switch box to easily fit a Z-Wave dimmer behind
    • Clean look and solid built
    • UL listed: meets North American safety standards
    • 1-year warranty

NOTE: This is NOT a Z-Wave device. You need a compatible Z-Wave dimmer module for wireless control.


This Zooz Momentary Switch is the perfect addition to your Z-Wave dimmer module. Its operation is simple but its potential is great: tap it to turn your Z-Wave dimmer on, press and hold it to adjust brightness, tap it again to turn it off. It is not a Z-Wave device by itself, and should be used with a behind-the-switch Z-Wave module for wireless functionality.

Use it to complete a 4-way or other complex multi-point control set-ups with the Fibaro Dimmer to add Z-Wave to circuits with no neutral. Its slim and compact form factor leaves extra space in your switch box making installation worry-free. The simple decora style will complement most interiors.


Before proceeding with the installation, turn off the power in the switch box. Make sure you have either 12 or 14 AWG copper wire, since this is the only type of wiring that’s approved for this installation. If needed, strip the wiring of its insulation (exposing 0.75” will be enough). Connect all wires to all screw terminals, including the ground wire. Tighten all the screws, and secure your Z-Wave module and the momentary switch in the box using the mounting screws. Be sure to handle the wires carefully. Install the wall plate, and turn the power back on to test the device.



    • Model Number: ZAC99
    • Type: Momentary contact
    • Power: 120 VAC, 60 Hz
    • Maximum Load: 15A
    • Operating Temperature: 32-104° F (0-40° C)
    • Installation and Use: Indoor only
    • Dimensions: 4” x 1.5” x 1.4”


Download the Manual for Momentary In-Wall Switch ZAC99 (PDF)

Customer Reviews

Based on 7 reviews
Eric Durand
Great product

I was looking for a cheap momentary switch to make a dumb 2 way switch smart, these switches worked great with my smart relay, no need to pull another wire!

Michael Woo
ZAC99 Dummy Switch

I have a 3 way where the switch I would use 99% of time is the side that did not have the neutral wire, so I had to install the ZEN72 dimmer switch in the remote location and used the default manual switch that could only turn light ON/OFF. The ZAC99 replacement is a simple momentary switch that can turn light ON/OFF and also can dim the light up or down by pressing/holding it. This works exactly like I expected it to.

The only real con is the switch is noisy or squeaky and needs quite a bit of force to get it to "click". Its much stiffer than all other switches I have.

All in all, a great companion switch for Zen22/Zen72 zooz dimmers to allow dimming at both locations when used in a 3 way hookup.

Good quality - does what it says, but not a "rocker switch"...

Nice quality - definite click. Works well.
Before you order, realize that this is only a pushbutton momentary switch, not a rocker switch as it's style suggests.
It only switches (and returns - on/off momentary) when the top is pressed, the bottom is a 'dummy' button.
I only point this out because I mistook what its function was, and hope to make it clear for others.

Only clicks one way

Very disappointed to discover that these only click in on direction. I thought it would rock both ways to keep the same functionality and aesthetic as other Zooz switches. My mistake...

Hi Bob.
We are sorry to hear you're disappointed. The product page describes that this is a one-button switch and how it operates. If that wasn't clear you can always return the product that you are unable to use. You can contact us to finalize the return. Thank you.

Works Well With Zooz RGBW Dimmer

Purchased this to work with the Zooz ZEN31 RGBW dimmer. Works as advertised. Easy to install. I used this on a low voltage circuit, so any wire would do.