The MIPRO PC-11 features the sound engineer that allows to synchronize transmitter match receiver frequency at any remote location. It can be used with the ACT-7H, ACT-5H, ACT-3H,ACT-3HD,ACT-OK, ACT-707HM, ACT-707H, ACT-707HE, ACT-7T, ACT-5T, ACT-3T, ACT-707TM, ACT-707T, ACT-707TE, and MA-101ACT.