4 Wire Type A 4-wire capacitive proximity sensor detects objects by measuring changes in capacitance. It features two power wires (10–30V DC) and two output wires (NPN/PNP transistor, NO/NC) with a sensing range of 8–15 mm. Key specs include IP68 protection, 1 kHz switching frequency, 300 mA load capacity, and short-circuit/polarity protection. Ideal for detecting non-metallic materials in industrial automation, liquid level control, and harsh environments. [...]