What is the lowest ambient temperature the V1k can be used in?

In most applications this is not a critical question. When an application does arise where the ambient temperature can be excessively low, we suggest the filter be exposed to a temperature of no lower than minus 15 degrees Fahrenheit unless special provisions are made. In some cases devices such as space heaters may be required when the device is not in operation. This follows true to most electronic equipment incorporating capacitors and other extreme-temperature sensitive components.