ITEM NAME:Keyboard Membrane Switch--Lot of 5 4x4 Matrix Fan 16 Keys Keyboard Membrane K3Q8 Keyboard Membrane Switch--Lot of 5 4x4 Matrix Fan 16 Keys Keyboard Membrane K3Q8 key Operating Force: 150-200N Insulation resistance: 100 m ohm Lifespan: 100 million times Bounce Time: 1 (ms) Color: As shown Material: Silicone Operating temperature: 60 celsius degree Circuit: Rating 35V (DC) 100mA A Contact resistance: 50 ohm (According to the cable length and different from those of the materials used) Resistance Isolation: 100 V 100 m ohm Dielectric Strength: 50 ~ 60Hz Package Contents: 5 x 16 Keys Keyboard Membrane Switch Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. Resistance Isolation: 100 V 100 m ohm. Dielectric Strength: 50 ~ 60Hz.