Shure PS21 In-Line Power Supply
In-Line Power Supply (120V ac) for models 200M, FP22, FP24, FP33 mixers, the P4M and P4T PSM Receivers, and the SLX4, T3, T4V, T4G, T4N, T88 and LX88 Wireless Receivers. Also available in a 220V ac version as the PS20E