Specification: Mechanical specification: Operating Force: 10-120gf. Cm Lever Stop Strength: 3kgf. Cm(2mm point from mounting surface) Lever Wobble: ≤1.6mm(both sides) Click Position: Center click only Click force: Operating force +10-150gf. Cm Electrical specification: Total Resistance Range: 500Ω-1MΩ+20% Resistance Taper: A. B. C. D. E. MN Withstanding Voltage: 1 minute at AC 250V Insulation Resistance: ≥100MΩ at 250V DC Sliding Noise: ≤100mV Endurance Sliding Life: ≥10,000 With ROHS Certification