ebm-papst CGC Series Fan Speed Controller, Variable, 10 → 57 V dc, 1 mA @ 10 V dc, 4 mA @ 57 V, Pulse Width
ebm-papst CGC Series Fan Speed Controller, Variable, 10 → 57 V dc, 1 mA @ 10 V dc, 4 mA @ 57 V, Pulse Width, For Use With: ebm-papst EC and DC Fans, Output Configuration: Pulse Width Modulation, MPN: CGCXX00000