Specification:
Type:Knob type motor speed controller
AC: 110V
DC: 90V
Scope of application: ONLY suitable for DC motors less than 400W 
Dimensions: 100×60×112mm(3.93"x2.36"x4.4")
Hole size: 82×54 90-2×φ4.5mm
Control method: forward
When the output voltage : DC0~90V the power is ≤120W

Package including:
1x Motor Speed Controller