3M TR-944N 4-Station Power Supply, for Versaflo TR-300, TR-600, TR-800
The TR-944N is a 4-station power supply for all 3M, Versaflo PAPRs. It can be used with between 1 and 4 battery charging cradles (sold separately) to create a multiple-station battery charger For use TR-640, TR-340, Charging Cradles