---
product_id: 613584245
title: "– 700 Series Z-Wave Long Range Smart Relay ZEN51 | Installs Behind Wall Switch Or at The Light | Compatible with SmartThings, Hubitat, and Home Assistant | Z-Wave Hub Required (Sold Separately)"
brand: "zooz"
price: "₪295"
currency: ILS
in_stock: true
url: https://www.desertcart.co.il/products/613584245-700-series-z-wave-long-range-smart-relay-zen51-installs
store_origin: IL
region: Israel
---

# Supports up to 960W load 700 Series Z-Wave Long Range Compact 3.8x3.6x1.8 cm wall-mount design – 700 Series Z-Wave Long Range Smart Relay ZEN51 | Installs Behind Wall Switch Or at The Light | Compatible with SmartThings, Hubitat, and Home Assistant | Z-Wave Hub Required (Sold Separately)

**Brand:** zooz
**Price:** ₪295
**Availability:** ✅ In Stock

## Summary

> 🔗 Keep your vintage switches smart and connected—no compromises!

## Quick Answers

- **What is this?** – 700 Series Z-Wave Long Range Smart Relay ZEN51 | Installs Behind Wall Switch Or at The Light | Compatible with SmartThings, Hubitat, and Home Assistant | Z-Wave Hub Required (Sold Separately) by zooz
- **How much does it cost?** ₪295 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/613584245-700-series-z-wave-long-range-smart-relay-zen51-installs)

## Best For

- zooz enthusiasts

## Why This Product

- Trusted zooz brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Discreet & Compact:** Small form factor fits behind any standard wall switch for invisible smart control
- • **Instant Status Updates:** Get real-time switch state reports directly to your smart hub
- • **No Neutral? No Problem:** Install behind fixture to leverage neutral connection effortlessly
- • **Seamless Smart Upgrade:** Transform your classic toggle switches without replacing them
- • **Ultimate Compatibility:** Works flawlessly with SmartThings, Hubitat & Home Assistant hubs

## Overview

The ZOOZ 700 Series Z-Wave Smart Relay ZEN51 is a compact, behind-the-switch device that converts traditional toggle switches into smart switches without replacing them. Compatible with major Z-Wave hubs like SmartThings, Hubitat, and Home Assistant, it supports loads up to 960 watts and offers long-range Z-Wave connectivity. Ideal for setups lacking neutral wires at the switch, it can be installed at the fixture for seamless smart control and instant status updates.

## Description

The relay is perfect if you like your old toggle switches and don’t want to replace them with smart decora style wall switches. You can simply install the relay behind your existing on/off switch to make it smart. Just make sure it’s not a dimmer or an illuminated switch – only simple mechanical and momentary switches can be used with this device. No neutral in the switch box? You can put this relay at the fixture where you’ll always find the neutral connection and still keep your wall switch in the set-up. Your hub will get an instant report if the light is turned on from the switch.

## Features

- Z-Wave

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Zooz |
| Part number | ZEN51 |
| Item Weight | 50 g |
| Product Dimensions | 3.81 x 3.56 x 1.78 cm; 50 g |
| Item model number | ZEN51 |
| Power source type | ac |
| Wattage | 960 watts |
| Plug profile | Wall Mount |
| Included components | User Manual |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Connector type:** Screw
- **Contact material:** Silver
- **Contact type:** Normally Open
- **Mounting type:** Wall Mount
- **Brand:** ZOOZ

## Images

![– 700 Series Z-Wave Long Range Smart Relay ZEN51 | Installs Behind Wall Switch Or at The Light | Compatible with SmartThings, Hubitat, and Home Assistant | Z-Wave Hub Required (Sold Separately) - Image 1](https://m.media-amazon.com/images/I/51KeUTH42rL.jpg)

## Questions & Answers

**Q: Can this be used without physical switches and only for control with via z-wave?**
A: Yes, the device doesn't need a physical input (switch) and you can control is using Z-Wave commands only. Remember to check your local safety regulations to make sure an emergency physical wall control isn't required for the load you'd like to control with the Zooz device.

**Q: I need similar that can run from 12-18vdc power, so I can relay some aux devices that also run on 12-18vdc. Do they make it?**
A: I haven't found 1 for 18vdc
So I used it to turn a 110v ac in 18vdc out powersupply on and off
I know it's involved but it what I did

**Q: Will these work on GFCI circuits? I have 2 outdoor lights that are on ground fault circuits and all of the zwave switches I have tried trip the gfci.**
A: Yes, it can be installed on a circuit with a GFCI.  I have this installed on an exterior circuit with GFCI and it works just fine.

**Q: Does it click when on/off? If yes, how loud?**
A: Any relay will make a sound when clicked so you will hear it when it's switched on and off. It's not too loud, just like your average 15A relay.

## Frequently Bought Together

- Zooz 700 Series Z-Wave Long Range Smart Relay ZEN51 | Installs Behind Wall Switch Or at The Light | Compatible with SmartThings, Hubitat, and Home Assistant | Z-Wave Hub Required (Sold Separately)
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- Zooz 800 Series Z-Wave Long Range S2 USB Stick ZST39 LR, Great for DIY Smart Home (Use with Home Assistant or HomeSeer Software)

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**Shop now:** [https://www.desertcart.co.il/products/613584245-700-series-z-wave-long-range-smart-relay-zen51-installs](https://www.desertcart.co.il/products/613584245-700-series-z-wave-long-range-smart-relay-zen51-installs)

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-02-15*