No info about availability.
LED Voltage Indicator
The LEVIN is an LED Voltage Indicator with a seemingly simple function: show an input voltage on a large LED bargraph. It provides a 21-LED bargraph display showing positive and negative voltages, with full-scale ranges of 500mV, 1V, 5V and 10V, and suitable for showing control voltages and audio signals from DC to in excess of 10kHz. Support for the CESYG Bus5, the Eurorack Power Bus CV line, and a front panel input, together with a separate monitor output, ensures LEVIN can monitor many signals in your synthesizer with ease.