lighting keyboard.It's thin, soft, waterproof, long lifetime and easy to pucker. It is mainly used in office, hospital, lighting keyboardThis EL keyboard consists four parts of silica gel, film switch, luminescent sheet and driving circuit. It has the characteristics of waterproof, dustproof, acidproof, alkaliproof, thin(0.86cm), key-press no voice, easy-curved and puckered, soft light at night, ...