29 keys stainless steel metal keypad, customized, 5x6 matrix USB interface

Mechanical parameters:
1. Key: composed of 29 keys, imported printing and drawing SUS304 stainless steel.
2. Key design: square key, the pattern and character etched by laser engraving, can be anti-corrosion and positive corrosion;
3. Key size: common key: 10 * 10 mm, 10 * 24 mm
4. Key stroke: 0.5mm
5. Key life: operate more than 1 million times / key.
6. Key force: 1.2N + / -0.1n (contact force)
7. Front panel: imported printed and brushed SUS304 stainless steel, 1.5mm thick
 Electrical parameters:
1. Working voltage: DC + 5V + / - 5%
2. Working current: 20mA
3. Expected service life: > 1 year
4. Key switch technology: imported gold-plated pot chips
5. Interface technology: USB, PS2, R232, P line
6. Operating system: DOS / Windows95 / 98 / NT / me / 2000 / 2003 / XP / Vista, Linux, UNIX, Mac OSX