2.1mm Illuminated Polarity Sensing DC Connectors | CCTV & Security Wiring | Jaycar

You've been there: wiring up a new camera run, flipping the connector three times, still not sure if centre's positive or negative. One wrong clip and you've fried a board. These 2.1mm DC connectors take the guesswork out completely.

Connect them and the LED tells you exactly what you're looking at. Blue means centre positive. Red means centre negative. Purple means AC voltage — walk away before you burn something. The LED also gets brighter as voltage climbs, so you can eyeball your supply level without a multimeter in hand.

Built for CCTV installs, access control panels, and any security gear that runs on 2.1mm DC. Add to cart and stop burning connectors

• Integrated LED shows polarity at a glance: blue = centre positive, red = centre negative, purple = AC voltage
• LED brightness scales with voltage — quick visual check without a meter
• 2.1mm barrel interface suits CCTV cameras, access control and security devices
• Simplifies installation by eliminating polarity guesswork on every new run