ITEM NAME:In-Line Power Switch ON/OFF 2.1mm/5.5mm Cable Jack For Arduino Plug 12V Hot a.imagelink a:hover.imagelink {color:#ffffff;.Switch body - approx 60mm long x 20mm wide x 20mm high (height includes actual switch rocker). Output: 1 channe. Connectors: 2.1mm x 5.5mm Male & Female. Working temperature: -20-60℃.