Feature: 1. Precise and sophisticated design, user-friendly into application. 2. Workable stacking contact block, easy to install and disassembly. 3. Smart mounting ring design, can connect ?22mm switchable to ?30mm diameter. 4. Several push button type options, can completely fulfill your needs. 5. Several emergency stop of push button options. 6. Several positional removable options. 7. Several control box options. 8. Compliance to UL approval. Specifications: 1. Standards: EN60947-5-1, UL508 2. Approvals: UL, and CE marked 3. Utilization Category: AC15 A600 4. Min Current: 5V, 5mA, DC 5. Thermal Current (lth): 10A 6. Rated Insulation Voltage: 600V AC 7. Insulation Resistance: 100M? min. (DC 500V) 8. Contact Resistance: 50m? max. (Initial) 9. Shock Resistance: 500 m/s² 10. Max Switching Frequency: 1800 operation per hour 11. Mech. Life Expectancy: 1 x 107 Cycle min 12. Electrically Life Expectancy: 100,000 Cycle min 13. Vibration: IEC 68-2-6, 10-55Hz±1 Hz, Excursion: 0.35mm, 1 octave/min 14. Screw Torque: 0.8N-m for five seconds without any fracture 15. Tightening Torque: 2.5N-m for one min. without any fracture