Our universal MDB interface kit includes a power supply so if can be adapted to vending machines that operate on 115vac. The connector mates with both 12 and 15 pin dumb mech. Sockets – wired for 24vac or 115 volt changers. This kit is ideal if you are not certain of the model of machine you will be updating or if the vendor does not have adequate current to power the MDB devices. On location installation typically takes only minutes. Turn the power to the vendor off and insert the 12 pin connector from the kit is inserted into the 12 or 15 pin socket of the machine. The power connector is then connected to 115vac supply that is fuse protected and that is after the machine’s power switch. The MDB components are then connected to the kit. The final step is restoring power to the machine.