Description With Screw thread, you can fix it on a panel or on the wall, and plug a male jack on it. See the picture how it looks like. Features: Conditions: temperature range: -40-55 ℃ Rated load: DC 30V 0.5A Contact resistance: ≤ 0.03Ω Insulation resistance: ≥ 100MΩ DC250V Withstand Voltage: AC 500V (50Hz) / min The swappable force: 3-20N