Specifications: With built-in power reverse connection protection circuit, surge protection circuit, overcurrent protection circuit, this switch is safe to use. Adopting fully enclosed ABS plastic and technical shell, it is insulated, waterproof, grease-proof, impact-resistant and high-temperature resistant, the degree of protection is IP50. The use of self-developed special integrated circuits improves the anti-interference ability of the system. This product adopts Hall proximity switch with high precision. It is suitable compatible security equipment, textile equipment, CNC machine tools, security equipment, automated production lines, electronic machinery, etc. Item Name: Proximity Switch Model: 01: PR12-2DN, 02: PR12-4DN Material: Metal, Plastic Output compatiblem: DC 3 Wires NPN NO Working Voltage: DC 10V-30V Output Current: 200mAh Detection Distance: 01: 2mm, 02: 4mm Detection Method: Electromagnetic Induction Detection Object: Metal Features: Anti-interference, High Sensitivity, Good Electrical Conductivity Diameter: 12mm/0.47" (Approx.) Wire Length: 1.8m/70.87" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Proximity Switch 2 x Screw Nut 2 x Gasket