ug288UG288: Si72xx-WD-Kit User’s Guide The Si72xx-WD-Kit allows for the evaluation of the Si72xx Hall Sensors through eht demos preloaded on the EFM32 Happy Gecko STK. Each ofUG288: Si72xx-WD-Kit User's Guide The Si72xx-WD-Kit allows for the evaluation of the Si72xx Hall Sensors through eht demos on in the kit on small, postage-stamp-sized (PS) boards