Plastic industrial computer keyboard with function keys and integrated trackball DX-87G1, Rugged plastic keyboard with function keys and mini trackball2, 87 full travel keys3, Made of PC+ABSBesides the excellent tactile key feedback that all common office-grade keyboards have, this plastic keyboard has robust case and keys, which are made of PC+ABS, this feature sets it apart from other office-grade plastic keyboards, it is specially designed for the application in harsh environment but excellent tactile key feedback is still maintained Key Features: -87 keys, US layout or customization -Key lifetime:>10 millions actuations -Silkscreen key legend -Working voltage:5VDC, working current:อ่านเพิ่มเติม