We've been developing the Cricket bails and stumps for the T20since the season 2013-14.
Features:
. 2.4GHz Radio Link between stump & bails
. Proprietary Master/Slave message protocol
. Re-chargeable battery system
. 1ms response time
. LEDs visible at 100m
. Single piece rigidised flex PCB
Rob, one of our Senior Electronic Engineers, testing the Cricket Bails for the T20 Cricket World Cup 2015.