This is a black DC power jack. It has an internal switch which will disconnect the battery power when a DC power adapter is connected so your battery won't drain. The outside diameter is 5.5mm. Fits standard BOSS-style power supplies with 2.1mm diameter plugs. This is the style with the internal nut.
Available in an economical 10-pack.
|2.1mm Switched Power Jack (internal nut) |
Download Datasheet PDF