Van Insulation Kits. Kingclima Transit 148. Kingclima Transit 130. Kingclima Connect . Promaster 136-159. Promaster City . Mercedes Sprinter . Mercedes Metris. Kingclima NV2500. Plug-in electric standby or shore power on a reefer unit, allows the reefer to continue operating, on the electric power grid, when the vehicle is stopped and switched off. ...