don't know which it is has no markings/ job # on it i would think it was a MPH2 because it was installed in 1995 by millar and i think mph1 was more 80's maybe?. i would like to get a set of prints if anyone has some they could email me, its a 5 stop hydro front open only with fire service. the fire service is what is the problem it will not work from the keyswitch and i am being told the keyswitch is good? but no prints on the job. I could have the boss bill the customer for a new set of prints but this is one of the "good" customer we all like, never has a problem breaking out the checkbook any time i tell him is needs somtihing. even this time, had no issue for paying for a team to come in on time and matieral to troubleshoot this issue but if i can find a set of prints close. thanks in advance