SparkFun Barrel Jack Power Switch - M-F


2.50 USD
$2.50 ea.

Instead of yanking and plugging 2.1" power connectors, toggle the power with this short inline power switch.

Description [Hide]

Turn it on? Find the power cable end, and plug it in.

Turn it off? Unplug it, drop cable, and immediately lose the end.

Oy. If you have a project that you need to cycle power to often, you'll wonder why the project just doesn't have a power switch of its own (we're looking at you, Arduino!). Although you can manually yank the power out of the socket, it's often inconvenient or impossible due to mounting concerns. This little power switch solves this problem by adding a nice little toggle switch in between your power supply and the board.


  • 2A Rated
  • Switch Body: ≈ 61 x 27 x 23mm
  • Cable: 85mm long (each side)
  • Barrel Connector: 2.1mm tip x 5.5mm long

You Might Also Like [Hide]


Barrel Power Jack socket, 2.1mm Connection

2.1mm barrel power jack socket. For connecting barrels, I mean "power leads"!

$1.00 USD


4-Way 2.1mm DC Barrel Jack Splitter

Power bar too full of multiple adapters? Wouldn't it be nice to have several devices share the same 2.1mm power plug? Split your adapter's power output among several projects!

$4.95 USD


DC Barrel Jack Adapter - Breadboard Compatible

Power that breadboard simply with this DC barrel jack.

$0.95 USD


2.1mm Socket/Jack Power Adapter set

It's a pain to solder up barrel jacks and plugs, so these screw-terminal based versions are very popular for repurposing DC power supplies to other applications!

$3.50 USD


Breadboard Jumper Wire Bundle

This 70-piece flexible wire jumper kit is sure to replace your old-style solid-wire jumpers. These are more flexible, robust, and easy to use!

$6.00 USD


DPDT Micro Top-mount Slide Switch

This micro DPDT switch has the switch lever on the top.

$0.50 USD


Keypad - 12 Button

A basic 12 button keypad for user input.

$3.95 USD


SPDT Toggle Switch

Robust plastic SPDT power switch

$4.75 USD


Adafruit NeoPixel Ring - 12 x WS2812 RGB LED with Integrated Drivers

Round and round and round they go! 12 ultra bright smart LED NeoPixels are arranged in a circle with 1.5" (37mm) outer diameter.

$7.50 USD


Track and Wheel Set

Allowing for a large degree of adjustability and creativity in design, the Track and Wheel Set offers three different lengths of tracks to choose from.

$9.50 USD





Remember Me

Forgot Your Password?

Don't Have an Account?
Sign Up!