ZW3K Add-on Switch for ZW15S and ZW500D

Affordable Add-On Switch


  • Auxiliary switch (not a standalone device)
  • Additional manual on/off control for selected Z-Wave light switches
  • For 3-way set-ups only (will NOT work with 4-way or 5-way installations)
  • Works with On/Off Switch ZW15S or Dimmer Switch ZW500D
  • Compatible with GE/Jasco master switches
  • 2-year warranty


The Add-on Auxiliary Switch ZW3K connects to your Z-Wave On/Off Switch ZW15S or Dimmer Switch ZW500D for additional manual control. It cannot be used as a standalone control switch. This device allows you to manually control the load on master Z-Wave switch from another location. Ideal for hallways, staircases or large rooms.

The ZW3K transmits electrical signal via the traveler wire and is compatible with the GE/Jasco on/off and dimmer switches (only for 3-way set-ups, not 4-way). This device is NOT Z-Wave enabled.


Prior to installation, make sure you’re comfortable working with 3-way circuits. A typical configuration:

  • Turn off power at circuit breaker of fuse and ensure power is off before beginning wiring/installation
  • Remove the wall plate, switch mounting screws
  • Carefully remove the switch from its box. DO NOT disconnect the wires.
  • Match the screw terminals to the wires of the existing switch 
  • Disconnect the wires from the existing switch
  • Connect the wires to appropriate terminals in the ZW3K switch, including the neutral and traveler connections - DO NOT power the add-on switch up (load and line are NOT to be connected to the ZW3K)
  • Check connections to ensure they’re tight and that no bare conductors are exposed
  • Install the Z-Wave Auxiliary Switch into the outlet using the supplied screws
  • Attach the wall plate
  • Restore power

Z-Wave 3-way wiring diagram

For more details, please refer to the instruction manual included with Z-Wave Add-on Auxiliary Switch ZW3K.


  • Power: 120VAC, 15A 
  • Operating Temperature: 32°-104°F (0°-40°C)
  • Installation: Indoor
  • Dimensions: 5.6 x 3.1 x 2.4 inches
  • Weight: 5.6 oz


ZW3K-W Add-on Switch for ZW15S and ZW500D Manual (PDF)

Next Previous

Related Items