Zooz 700 Series Z-Wave Plus Dry Contact Relay ZEN51

$24.95 $32.95

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Installation Type

Backstage Z-Wave


  •   PLEASE READ: Choose the correct version!   Make sure you select the correct version of the ZEN51 depending on your installation. Select Single Pole when the ZEN51 will be mounted behind a single switch controlling one light (or group of lights) and 3-Way/4-Way is the ZEN51 will be installed in a multi-way set-up with 2 or more switches controlling the same light or group of lights.
  • On/off Z-Wave control for 120V and dry contact applications: great for lighting control or 120V load monitoring (sump pumps, motion lights)
  • 700 series Z-Wave chip: greater coverage for a stronger mesh network
  • SmartStart and S2 authenticated security for a truly protected smart home
  • Installs behind the existing wall switch or at the fixture (if neutral is not available in the switch box)
  • Pigtail wires included for hassle-free set-up
  • Perfect if you'd like to leave your favorite wall switch style or color but add Z-Wave to it
  • Smart bulb mode: disable manual and/or Z-Wave control to control your smart bulbs via Z-Wave only without cutting power to them
  • Scene control: choose from 7 multi-tap triggers to expand the functionality of the connected switch (available on hubs that support multi-tap triggers*)
  • Multicolor LED indicator for easier pairing and diagnostics
  • Compatible with quality LED and incandescent bulbs (don't connect to ballast tube lights, switched receptacles, or fans over 3A / 5 years old; NOTE: FEIT bulbs are not recommended)
  • Built-in signal repeater: helps keep your network quick and reliable
  • 5-year warranty and lifetime tech support

    NOTE: Z-Wave gateway controller required - sold separately. *Your smart hub / controller needs to support advanced settings and central scene programming for you to take advantage of this feature.


    Before installing, make sure the load does not exceed 960W for incandescent lights, 150W for LED's, 3A for fans and motors, or 10A for resistive load. Check your wiring first to confirm that you have all the following wires present in your gang box: load (most often black), line (most often black), neutral (most often white), and ground (most often green).

    If you are not comfortable identifying the wiring and following the instructions, please hire a licensed electrician.

    Zooz 700 Series Z-Wave Plus Dry Contact Relay ZEN51 Single Pole Wiring Diagram

    Here are some helpful wiring tips:

      • Make sure the gang box you are about to install the switch has a neutral wire available - you will not be able to get the ZEN51 relay to work without a neutral wire. If neutral is not available, you'll need to install the ZEN51 at the light fixture.
      • Unlike regular mechanical switches, Z-Wave switches require all of the wires to be connected exactly as indicated - line and load wires can never be swapped as it sometimes happens to the most experienced electricians.

    How to include the Dry Contact Relay to your smart home network?
    1. Bring your Z-Wave gateway hub or controller as close to the switch as possible
    2. Put your Z-Wave controller in inclusion/pairing mode
    3. Click the Z-Wave button on the relay 3 times quickly to finalize the inclusion process
    4. A new on/off switch should appear on your controller's device list


    NOTE: If you don't see your Z-Wave controller on the list above, please contact us before you purchase this product.


    • Z-Wave Frequency: 908.42 MHz (US)
    • Power: 120-240 VAC, 50/60 Hz
    • Maximum Loads: 960W incandescent, 150W LED bulbs, 10A resistive, 1/2 HP fan motors
    • Z-Wave Range: Up to 300 feet line of sight
    • Dimensions: 1.5" tall, 1.4" wide, 0.7" deep
    • Operating Temperature: 32-104° F (0-40° C)
    • Installation: Indoor use only


      Download the Manual for Zooz 700 Series Z-Wave Plus Dry Contact Relay ZEN51 (PDF)

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