CVT module, 25x200 mm, with two toggle switches and two jacks

This is a utility module for voltage range conversion. A voltage in any of the three ranges 0–5 V, 0–10 V, or ±5 V can be converted to any of the other two — or to itself, for that matter. Input and output are DC coupled and mainly intended for control voltages, but audio signals also can be converted. Input impedance is 1M and the output current limiting resistor is in the loop, so if the resistors are well matched a conversion from ±5 V to 0–10 V or vice versa, or any range to itself, should accurately preserve the scale of a signal.