Enwill Technology Co., Ltd.  

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Key numbers: 104;
Input power: DC5.0 AND 10% UP/DOWN, 200ma maximun
Touch resistance: 500 ohm maximum
Insulated resistance: DC100V 50m-ohm minimum
Key switch life: 10million TIMES
Travel distance: 4.0mm± 0.15MM
Operating force: 55± 8g
Support multi languages
Plug & Play supported
Compatible with Windows 2000/ME/NT/XP/VISTA