It is a component widely used in automatic control systems for detecting, controlling, and non-contact switching. When the proximity switch is close to a target object, it sends out a control signal. It is commonly used in machinery, paper manufacturing, and light industry for position limiting, orientation, counting, and speed detection. Product Name: Capacitive Proximity Switch Model: LJC30A3-H-J/EZ Wire Type: 2 Wire (Brown, Blue) Switch Appearance Type: Cylinder Type Theory: Capacitance Sensor Output Type: NO (Normally Open) Diameter of Head: 30mm Detecting Distance: 0-20mm Detecting Object: Metal or Nonmetal Material Supply Voltage: AC 90-250V Current Output: 400mA Response Frequency: 7Hz Operating Temperature: -25C to +65C (Non-freezing Condition) Cable Length: 120cm / 47 inches External Material: Plastic, Alloy Net Weight: 126g Color: Silver, Yellow, Gray Package Content: 1 x Capacitive Proximity Switch Note: Lighting conditions and different displays may cause slight variations in the color shown in the image compared to the actual item. Measurement may vary by +/-1-3 cm.