Dimension 395mm*165mm*25mm . Pack the size 410*190*30mm . Weight 478g . Switch Travel distance 3.0A?0.4mm . Rubber elasticity 50A?6g . Storage Temperature( c ) -40~+50 . Storage Humidity 10%~85%RH . Operating Temperature( c ) 0~+50 . Operating Humidity 20%~90%RH . Life Cycle 10,000,000times . Power Consumption 0.5Wstts Max . Power Supply +5VA?5% . Power current Max300mA . Available Port PS/2,AT . The LE cold light slice for the rat key to have no action gives out light the hour long 22S+0.5S . the LE cold light slice gives out light the work electric current 13.4mA.