How to recognize the receiver and transmitter on IBS-SH-60-2 Support April 29, 2020 07:50 Updated Follow On the barriers put an R and T on the back labels to know which is the transmitter and the receiver.Just in case, another method is to look at the one with the power input at the bottom; that will be the transmitter and the other one the receiver. Related articles Configuration of barrier (IBS-) and receiver (IS-SH-REC) synchronization AJAX DualCurtain Outdoor | Outdoor Dual Curtain Motion Detector Change language in Safire Control Center software 3.2.0.54 Arming and Triggering SANY-XS25-TR AJAX: scheme and configuration of AJ-RELAY