Zooz | SKU: ZEN51

Z-Wave Zooz Dry Contact Relay

Name: Z-Wave Zooz Dry Contact Relay
Brand: Zooz
SKU: ZEN51
Price: 43.00 GBP
Availability: InStock

£43.00

Delivery to United Kingdom from £4.95 · 2–4 working days

Free over £75 · Express £7.95

In stock

Works with your system

Based on manufacturer compatibility lists, our own tests and shared wireless standards.

On Hubitat, set the device type manually. SmartThings needs a custom driver for advanced settings.

See all controllers (8)

Homey Pro Listed by the manufacturer
Home Assistant Listed by the manufacturer
Fibaro Home Center 3 Works by standard
Fibaro Home Center 3 Lite Works by standard
Nice Yubii Home Pro Works by standard
Nice Yubii Home Works by standard
Aeotec Smart Home Hub (SmartThings) Works with limits
Hubitat Elevation (C-8, C-8 Pro) Works with limits

How we check compatibility

Compatibility Guarantee If it doesn't work with your system, return it within 30 days for a refund.

You'll also need

Z-Wave USB adapter for Home Assistant Required

Home Assistant needs a Z-Wave adapter (usually a USB stick) to talk to Z-Wave devices; skip this if your Home Assistant box already has one.

Needed with: Home Assistant

Z-Wave Plus Aeotec Z-Stick 7 Aeotec · £53.00

+ Other options (4)

Aeotec Z-Stick Gen5+ USB Controller Aeotec · £65.00

Z-Wave Sonoff 800 PoE Dongle Max Sonoff · £60.00

Aeotec Z-Stick 10 Pro (Z-Wave & Zigbee) Aeotec · £82.00

Z-Wave Plus Zooz USB Dongle 800 (EU / UK version) Zooz · £46.00

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Get it Tomorrow – Express UK Delivery

Free UK delivery on orders over £75, otherwise £4.95.

Need it tomorrow? Choose Express (£7.95) at checkout.

In-stock items ordered before 2:30pm ship the same working day.

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You'll get set-up help and answers from our smart home team by email and live chat, plus a wealth of guides to help with any technical questions.

Compatibility Guarantee

If Z-Wave Zooz Dry Contact Relay doesn't work with your existing system, you can return it within 30 days for a refund under our returns policy.

Request the return from your account and we'll send you an RMA number and instructions.

Summary

The ZEN51 Dry Contact Relay lets you control lights or dry contact devices manually or via your Z-Wave hub. Compact enough to fit behind standard wall switches, it supports single pole and 3-way wiring. Built on the 700 Series Z-Wave chip, it offers reliable range, SmartStart pairing, and S2 security, with customizable settings including scene control, timers, and power-failure recovery.

Relay Wiring and Network Setup

Ensure your gang box includes a neutral wire before installing the ZEN51 relay, as it is required for proper operation. If a neutral isn’t available at the switch, the relay can be installed directly at the light fixture. Follow the wiring diagram carefully—line and load wires must never be swapped. To add the relay to your Z-Wave network, bring your hub within range, put it into pairing mode, and press the relay’s Z-Wave button three times quickly. Once paired, the relay will appear as an on/off switch on your hub.

Personalized Smart Home Switching

The ZEN51 relay can be customised to suit your automation needs. Select the appropriate wall switch type, enable power-failure recovery, or activate Smart Bulb Mode to keep smart bulbs powered while still triggering Z-Wave actions. For enhanced automation, switch to a momentary setup to enable scene control—for example, double-tap to trigger a preset lighting scene or single-tap for your favourite routine—without changing your existing habits.

Compact Design, Flexible Wiring

Designed to fit discreetly behind standard UK/EU wall switches, the ZEN51 supports single pole and 3-way wiring. It can control LED or incandescent lights up to 150 W/960 W, resistive loads up to 10 A, or dry contact devices such as garage doors or pumps. If a neutral is not present at the switch, simply install the relay at the fixture. Its compact form and pigtail wires make installation simple, and included wiring diagrams plus SmartStart pairing ensure secure and hassle-free setup.

Payment & Security

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Frequently Asked Questions

What if it's incompatible with my existing smart home system?

If you try Z-Wave Zooz Dry Contact Relay and find it isn't compatible with your system, you can return it within 30 days for a refund.

How can I get technical support for it?

Set-up help and answers from our smart home team by email and live chat. Just get in touch with any technical question you have.

Do you offer installation services?

While we don't offer direct installation services, we provide online support through guides, videos, and help from our smart home team by email and live chat. If you need an installer, we can often help connect you. With advancements in smart home tech, most of our products can be self-installed with guidance.

What if I struggle with installing or using after purchase?

Just get in touch. Our smart home team can help you work through set-up and troubleshooting by email and live chat, and our guides and videos cover set-up for many devices. Most problems can be sorted quickly with the right steps.

How quickly will I receive my order?

Orders placed before 2:30pm on a working day are dispatched the same day. In the UK, Standard delivery takes 2 to 4 working days and Express is a next-day service. If your order includes a Vesternet device, choose Standard at checkout and we upgrade the whole order to next-day at no extra cost. For orders outside the UK, delivery options and times are shown at checkout.

Why should I choose to buy from Vesternet over other online stores?

When you buy from Vesternet, you're not just purchasing a product. You get set-up help and answers from our smart home team by email and live chat, plus guides for the products we sell. While there might be cheaper options online, home automation can be complex, and good advice can prevent costly mistakes.