$ 26.99

The ZEN51 provides a single pole, single throw dry contact that can be mounted behind a light switch for controlling one light (or group of lights). It can also be used with 3-Way/4-Way switches for 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. *Your smart hub / controller needs to support advanced settings and central scene programming for you to take advantage of this feature.


  • 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 (Contact us for help with heavier loads)
  • 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
    • Z-Box Hub (recommended for Zooz products)
    • Ezlo Plus 
    • Ezlo Secure 
    • Fibaro Home Center Lite
    • Home Assistant (Z-Wave JS)
    • HomeSeer 
    • Hubitat (change device type to Generic Z-Wave Plus Switch manually)
    • SmartThings Hub (register your product here to access the custom lua driver for full functionality)

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

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