Zooz ZEN52 Double Relay

Quick verdict

The ZEN52 is two ZEN51 relays in one package. Tuck it behind a two-gang switch and both switches become Z-Wave smart while keeping their original look. Both channels show up independently in Home Assistant. Wiring is not trivial, but the result is clean.

Standout: Two independent line-voltage relays in one module. Smart-ify a two-gang box without replacing either switch.

Notes last checked Sep 24, 2026.

Compatibility snapshot

Why it stands out

• two independent line-voltage (120V) relays in one compact module, letting you control two loads from one device
• fits behind a two-gang switch box to make both switches smart
• Z-Wave 700 series with Long Range support

Reasons to hesitate

• wiring two relays behind switches is fiddly, so plan for extra time
• on/off only, no dimming on either channel
• tight in shallow gang boxes, especially with two sets of wires

Best for

• two-gang switch boxes where you want to keep existing switches and add Z-Wave behind them
• controlling two independent loads like a bathroom fan and light from one module

Avoid if

• you need dimming capability, since this is relay switching only
• you are not comfortable working with electrical wiring behind switches

Privacy and local-control notes

Fully local Z-Wave device. No cloud dependency. Available with Z-Wave Long Range in some regions.

Home Assistant support: supported · integration path: Z-Wave JS.

Buying reality check

Price notes: Costs less than two ZEN51 relays and takes up less space. Best value when you have a two-gang box to automate.

Compare side by side: see in-wall relay comparisons →

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