Don’t let the size fool you This compact Simulator packs a lot of punch in a small package. At only 7” X 4” X 1.25 inches, AMPS-1 fits comfortably in your hands and all leads and cables are conveniently fed from the top and bottom ends. Operate from the single 9 volt alkaline battery or with the optional battery eliminator. The unique modular design of AMPS-1 allows you to get just what you need as you need it. Upgrading and adding modules is easily accomplished by you at your facility. No need to send it to a repair facility just to add features.