EKM Switch120


The EKM-Switch120 is a power cord that switches 120 VAC with a DC control voltage of 3.3–60 VDC, which allows it to be controlled remotely.
View More

More information

Description: Remote Switchable 120 VAC Power Strip with 4x outlets.

Connections: Low Voltage DC Pos(+) and Neg(-), 1x Standard male 3-prong NEMA 5-15 120 VAC, 1x Always On Standard female 3-prong NEMA 5-15 120 VAC, 1x Normally On Standard female 3-prong NEMA 5-15 120 VAC, 2x Normally Off Standard female 3-prong NEMA 5-15 120 VAC

Model: EKM-S120

Control 2 of these 120 volt switches by connecting them to our Omnimeter Pulse v.4 or Omnimeter HV v.5

Each switch can be controlled independently using a Push3 gateway and Push Account Portal, or a USB Converter and the EKM Dash software, by connecting them to Output1 and Output 2 on the v.4 or v.5 Omnimeter.

This is a power cord that switches 120 VAC (up to 15 amps) with a DC control voltage of 3 VDC @ 3mA to 12 VDC @ 30 mA. This device gives you the capability to turn your power on/off remotely using a very tiny control voltage! It is big enough to control major loads: pumps, lights, appliances, etc.

It's Safe:

  • 3kV optical isolation – eliminates shock hazard.
  • Relay hysteresis – prevents relay chatter.
  • De-bounce protection – extends contact life.
  • LEDs – verify input voltage and switch state.
  • No exposed 120 VAC voltages and no dangerous 120 VAC wiring required.
  • Plugs into standard American 120 VAC 3-prong household outlets, power strips, and extension cords.
  • Eliminates the exposure of hazardous voltages in DIY projects, classrooms, and on development work benches.
  • No special 120 VAC wiring when deploying new products and custom solutions.
  • Can be installed by non-technical users.
  • 5300 Vrms isolation from the 120 VAC circuit.
  • A 12A thermal safety circuit breaker switch prevents overloads and adds supplemental protection.
  • A large 3600W MOV clamps surges for clean power

It's Convenient:

  • Easily inserts between power source and corded electrical devices.
  • Switches up to 15 amps with a control signal as low as 3vdc at 3ma. Ideal for use with battery operated controllers or micro controllers.
  • Connects directly to an Arduino or other MCU digital pin without the need for driver transistor or buffer circuit.
  • Two-wire voltage control signal connects to terminal block (30-14 AWG).
  • LED indicator shows status of control signal.
  • Units are "stackable" and easily mount with two screws.
  • Connect input plug to wall outlet or power strip.
  • Connect output receptacle to a single powered device or up to 4 powered devices.
  • Output devices may be 3-prong or 2-prong appliances or lights.
  • Convenient safety ground connection available for grounding external control circuit.


  • AC input: NEMA 5-15P Plug, standard 120vac with ground.
  • AC output: NEMA 5-15R Receptacle, standard 120vac with ground.
  • Switching capacity: 15amps @ 120vac.
  • Life expectancy: The durable SPDT control relay is rated at 30/40A, 400,000 operations at 12A resistive. At no load the estimated lifetime is 5.3 million mechanical operations.
  • Control input: 3.3–60 VDC (3-30ma) or 12–120 VAC, terminal block accepts #30-14 AWG wire.
  • Switching Speed: 15 ms max actuate, 10 ms max release.
  • DC to AC circuit isolation: 5300 Vrms.
  • Indicator: LED indicates when DC side is energized.
  • Protection: AC side protected with 150V AC MOV; DC side is transient free.
  • Mounting: Two #6 screws. Indoor use only.
  • Temperature: -35ºF–145ºF

Spec Sheet: Switch120 Spec Sheet .pdf

For more information about our products and services, we encourage you to visit our online Knowledge Base, which provides spec sheets, videos, tutorials, FAQs, diagrams, and more.


Ask a Question
  • Would this work to power on a audio amplifier from a Yamaha CXA5100 preamp via the 12v outputs?

    If your amp can produce 3-30 milliamps on the control signal,  then it should work.

  • Will this outlet work with Atkinson\'s VRDC relay? I want to be sure that the output voltage of the VRDC will trigger the EKM Switch 120 and not damage it.

    Atkinson offers a variety of relays but I think that they do have an option that will work. Be sure that the relay control voltage is within these specs: 3VDC @ 3mA to 12VDC @ 30mA

  • Could this be used to control a small A/C unit or dehumidifier - by using a limit switch that closes the DC circuit? (i.e. could I put a limit switch on my garage door and use the EKM switch to only power a small A/C unit when the door is closed?)

    Provided that your AC unit and/or dehumidifier are 120v appliances that draw 15A or less the Switch120 may work. The limit switch on your garage door simply needs to provide from 3 VDC at 3mA to 12 VDC at 30mA, to the Switch120, for it to provide 120V to your appliances.

  • What is the range on the remote?

    I'm not sure I understand the question. This product is not a remote. It is a switch that is controlled remotely. The possible length of the two control wires depends on the voltage provided, as voltage drops over distance. The Switch120 needs 3-12VDC (3-30mA) in order for the switch to actuate. So if you're providing 12VDC then your distance could be 400ft, possibly more.

  • 2 questions: Is it UL-approved? Does it ship from a warehouse in the US?

    No, the Switch120 is not UL Listed or Recognized. Yes, these ship from our warehouse in Santa Cruz, California.

  • The receiver is an AV receiver (for home theater) It is a Onkyo TX-RZ900. It has a 12V AC trigger, up to 100mA. Also, which connector cable does one need to attach to your device?

    I don't have any experience with this receiver so I won't be able to say for sure if the switch will work with it. It seems like it may work but I don't wan to give you false information.

    The connections are made with twisted pair wires like the ones you find in CAT5 cable. You can see this in the images above.

  • Can I use the "12V Trigger out" from my receiver to operate this switch?

    I don't know what you mean by "receiver" so I won't be able to tell you if it will work with this switch. The switch will work with 3 VDC at 3mA up to 12 VDC at 30mA. The Omnimeter Pulse v.4 has 2 controllable outputs that can be used to control this switch. Using this meter you can also use the EKM Dash software to control the switch from a computer.

  • Can I use this switch with an automatic low voltage vacuum dust pan switch to turn on 110v vacuum?

    If you can provide the low voltage signal to turn the Switch120 on or off, it should work for what you are wanting to do.

Customer Reviews

No reviews yet Write a review