# Hardware and Advanced

▪Trial Control event

▪Trial Control state

▪Trial Control variable

▪External data 1122

▪Free interval 1130

▪Multi condition 1150

▪JavaScript continuous 1160

▪JavaScript event 1162

▪JavaScript state 1164

See also

For Hardware variables related to devices like the Pellet dispenser, the Lickometer, PhenoWheel or the PhenoTyper Top Unit, see the Analysis of Trial Control data in the EthoVision XT 19 - Trial and Hardware Control - Reference Manual. To open this manual, choose Apps > Noldus > EthoVision XT 19 Other Documentation.