--- product_id: 457380530 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: "₩100654" currency: KRW in_stock: true category: "Zooz" url: https://www.desertcart.kr/products/457380530-700-series-z-wave-long-range-smart-relay-zen51-installs store_origin: KR region: South Korea --- # Supports up to 960W incandescent 1300 ft Z-Wave Long Range Compact 1.5"x1.4"x0.7" for tight spaces 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:** ₩100654 **Availability:** ✅ In Stock ## Summary > ⚡ Power your smart home with invisible control and epic range! ## 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?** ₩100654 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/457380530-700-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 - • **Smart Bulb Mode:** Keep your smart bulbs powered and controllable without cutting power at the switch. - • **3-Way Setup Friendly:** Automate multi-switch setups even without neutral wires at the switch box. - • **Plug & Play Installation:** Compact design with pigtail wires fits crowded boxes and installs hassle-free. - • **Seamless Smart Integration:** Add Z-Wave control behind your existing switch without changing your style. - • **Unmatched Range & Security:** Enjoy up to 1300 ft Z-Wave Long Range with SmartStart & S2 encryption for future-proof automation. ## Overview The Zooz 700 Series ZEN51 is a compact, ETL-certified Z-Wave smart relay designed for seamless behind-the-switch installation. It supports up to 960W incandescent or 150W LED loads, offers up to 1300 feet of Z-Wave Long Range connectivity, and enables 3-way switch automation without neutral wires at the switch. Compatible with major hubs like SmartThings, Hubitat, and Home Assistant, it features SmartStart, S2 security, and a unique Smart Bulb Mode to maintain power to smart bulbs. Ideal for professionals seeking discreet, reliable, and future-proof home automation. ## Description NOTE: Check Wattage first: DON'T exceed 150 W of LEDs or 960 W incandescent. Use with small fans under 1/2 hp only. NEUTRAL WIRE REQUIRED.SPECIFICATIONS:Model Number: ZEN51Z-Wave Region: US/CA/MXPower: 110-120 V AC, 60 Hz960 W incandescent, 150 W LED bulbs, 10 A resistive, 1/2 HP fan motors (don't use with tube lights or switched receptacles)Z-Wave Range: Up to 300 feet line of sight (1300 feet with Z-Wave Long Range enabled)Dimensions: 1.5" tall, 1.4" wide, 0.7" deepOperating Temperature: 32-104° F (0-40° C)Installation and Use: Indoor only Will it work with my smart speakerSmart speakers are not Z-Wave controllers so you will need a compatible Z-Wave hub to control this device with voice commands.Smart speaker compatible Z-Wave hubs include:Z-Box Hubcompatible with SmartThingsHome Assistant (Z-Wave JS)HomeSeerHubitat ## Features - SMART RELAY FOR ON/OFF CONTROL: Install this relay to add Z-Wave to the existing wall switch and keep your favorite switch style and color. The relay output is dry contact for your unique applications outside of lighting but note the input (switch) requires 120 V which makes it perfect for 120 V signal monitoring on sump pumps or motion lights. For a dry contact input device, look up ZEN16. - 3-WAY COMPATIBLE: Unlike many other smart relays, you can use this device to automate 3-way set-ups as well. Even if you don't have neutral available at any of the switch boxes, you can always install this relay at the light fixture where you'll have access to power and neutral. Always follow the wiring diagrams carefully and make any programming changes if needed when installing this relay. - EASY INSTALLATION: Pigtail wires for convenient connections. Connect to mechanical on/off or momentary switches only (NO dimmers or electronic / smart switches). The relay is small enough to fit in the most crowded box, just 1.5" x 1.4" and 0.7" deep. NEUTRAL WIRE REQUIRED (check before buying). The device is ETL certified and conforms with North American safety standards. - SMART BULB MODE AND MORE: Bring back the switch function to your old switches even when using smart bulbs. The smart bulb mode allows you to control smart bulbs via Z-Wave without cutting power to them when off. Enjoy the new 700 series Z-Wave with powerful features like Z-Wave Long Range, SmartStart, and S2 authenticated security. Your hub or home automation softwarre needs to support this functionality as well. - HUB COMPATIBILITY: This is an advanced Z-Wave device and it requires an updated Z-Wave hub to display correctly. All Zooz devices work best with the Z-Box Hub. It was tested to work well with Hubitat, Home Assistant (Z-Wave JS), HomeSeer and is compatible with SmartThings. This product is backed by US based support from Zooz, 7 days a week and a 5-year warranty once registered. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B5VR87JX | | Best Sellers Rank | #54,153 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #424 in Electrical Light Switches | | Brand Name | ZOOZ | | Coil Voltage | 120 volts | | Connector Type | Screw | | Contact Current Rating | 10 A | | Contact Material | Copper | | Contact Type | Normally Open | | Current Rating | 1.5 A | | Customer Reviews | 4.2 4.2 out of 5 stars (136) | | Included Components | Smart Relay, User Manual | | Lower Temperature Rating | 32 °F | | Manufacturer | Zooz | | Maximum Switching Current | 10 A | | Maximum Switching Voltage | 120 volts | | Minimum Switching Voltage | 120 volts | | Model | ZEN51 | | Mounting Type | Flush Mount | | Operation Mode | Automatic | | Part Number | ZEN51 | | Specification Met | FCC | | UPC | 853478006513 | | Wattage | 960 watts | ## Product Details - **Connector Type:** Screw - **Contact Material:** Copper - **Contact Type:** Normally Open - **Current Rating:** 1.5 A - **Mounting Type:** Flush Mount ## 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) ## Available Options This product comes in different **Style** options. ## 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) - Zooz 800 Series Z-Wave Long Range S2 On Off Switch ZEN76 800LR, White | Simple Direct 3-Way and 4-Way Solution (Works with Regular Switches, No Aux Switch Needed) | Z-Wave Hub Required - Zooz 800 Series Z-Wave Long Range S2 USB Stick ZST39 LR, Great for DIY Smart Home (Use with Home Assistant or HomeSeer Software) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/457380530-700-series-z-wave-long-range-smart-relay-zen51-installs](https://www.desertcart.kr/products/457380530-700-series-z-wave-long-range-smart-relay-zen51-installs) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-08-26*