New Range: RFXCom 433MHz & 868MHz Transceivers Now at Vesternet
We've added a new range to Vesternet — and it's one that solves a very specific problem for the enthusiast crowd. RFXCom is a Dutch specialist that's spent years perfecting...
We ship worldwide... simply add products to cart to see real time shipping prices & delivery times based on weight and location.
Any items in stock and ordered before 2:30pm (UK) will ship same day.
Transform your home into a smart one with us, and gain more than just a product.
You'll have access to our dedicated team of experts and a wealth of guides, ensuring you're well-equipped to handle any technical challenges.
Introducing our unmatched Compatibility Guarantee.
If you discover that Z-Wave Zooz Dry Contact Relay doesn't mesh with your existing system, simply utilize our swift two-click returns process.
We'll instantly provide a self-serve shipping label for hassle-free returns. Upon receiving the item, your refund is processed immediately.
With our guarantee, you can put compatibility worries to rest.
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.
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.

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.

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 methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

This £37 Premium Book unveils the most innovative ways to integrate smart tech seamlessly into your daily life, truly transforming your living space into a haven of convenience, safety, and modern sophistication. You'll Learn...

This £37 Premium Book unravels the mysteries of wireless technologies, guiding you to optimize your smart home's connectivity for unparalleled performance and convenience. You'll Learn...

This £37 Premium Book unravels the intricacies of both preparing you home for smart tech + adding to it over time. You'll Learn...
We offer a no questions asked express return service. So, if you try Z-Wave Zooz Dry Contact Relay and find it's not compatible with your system, you can easily return it.
Our team of experts is available to assist you with any technical questions you may have via email and live chat.
While we don't offer direct installation services, we provide comprehensive online support through guides, videos, and access to our experts via email and 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.
We have experts who frequently use these products in their own homes, and they are well-acquainted with the ins and outs. This means we can provide unparalleled guidance and troubleshooting. You won't find this level of hands-on expertise at any other store.
If you place your order before 2:30pm in the UK, you can expect it the next day. For orders outside the UK, we offer express shipping options that will get your products to you within a few days.
When you buy from Vesternet, you're not just purchasing a product. You gain a partner with expertise in smart home technology. Our team is on-hand to assist with setup and provide valuable advice. While there might be cheaper options online, home automation can be complex, and having experts by your side can prevent costly mistakes.

In 5 Simple Steps...
Then easily add more devices ongoing as you choose
Modules, sensors, wall controllers & more - all with Z-Wave & Zigbee options + extended warranty & support