Features:
Analog Thru-Zero VCO designed by Ian Fritz
1V/Oct Scaling
dotcom Power Header
Multi-turn Pot for 'Frequency'
Multi-turn Pot for 'Initial Frequency'
Sync Input with Variable Sync Depth
Simultaneous Sine, Triangle, and Sawtooth/Ramp Outputs
1V/Oct CV Input
External CV of Linear Frequency Modulation and Exponential Frequency Modulation
AC / DC Switch for Linear FM Input
Level Controls for Linear FM and Exponential FM
1% Metal Film Resistors
1/4" Switchcraft Jacks

https://freestatefx.com/collections/free-state-fx-modules/products/115