... electronic devices.Compact and lightweight,SIM-500M easily connects to a vehicle"s battery.Product FeaturesAutomatic protection against overload, over ... %)Frequency50 or 60Hz(±2%) selectable by DIP switchStandard ReceptaclesA,B,C,D,E,F as the above pictureLED IndicatorGreen LED for power on, ... ~ 90% RH non-condensingStorage Tem. Humidity-30°C~+70°C/22°F~+158°F/10~95%OthersDimension311×265×93(L×W×H)389 ...