simple devices - fix view pChart voltage device
simple devices - fix view pChart voltage device

sergejey/majordomo,sergejey/majordomo,sergejey/majordomo,tarasfrompir/majordomo,tarasfrompir/majordomo,tarasfrompir/majordomo,sergejey/majordomo,tarasfrompir/majordomo,sergejey/majordomo