This is a 5.5 mm x 2.1mm panel mount DC power jack 5A 30V DC with waterproof cap .
Specifications:
Assembly: solder tabs
Operating temperature range: -30-70 ° C
Rated load: DC 30V 5A
Contact resistance: ≤0.03Ω
Insulation resistance: ≥100MΩ
Withstand voltage: AC 500V (50Hz) / min
Insertion and extraction force: 3-20N
Comes with waterproof cap and nut.