t1 slotSlot opening width : 6mm Finger width : 9mm; Colour : Grey RAL 7030; T1 = 18mm, 30mm, 40mm and 60mm hehts; T1-F = 80mm, 100mm and 125mm hehts; T1-F have an extraThe first time slot is numbered 1. For a T1 controller, the time slot range is from 1 to 24. For an E1 controller, the time slot range is from 1 to 31. unframed—Unframed mode