Whyte Series 9 is a range of 9 wire line powered Cascading Multiswitches. The Whyte Series 9 range comes fitted with Pro-Tap Technology. Developed by Whyte Technologies, a Pro-Tap is an in-built �??Protean Tap which enables the installer to easily select input tap losses of 0,-10 or -20dB, whilst still maintaining a trunk through loss of only 4dB. IRS System pre-planning is virtually not required as tap loss settings are selected at the commissioning stage.