I've been seeing a lot of the Ilex #3 electronic shutters on the big auction site. The vast majority do not come with the control box and are selling for very little money. My question(s): Does anyone know the correct control voltage to the solenoid? and: What were the fastest speeds that these were physically capable of? I have a couple of lenses in #3 Acme Synchro shutters (the set & release type, not self cocking). One of them is marked up to 1/200th and the other (a newer model) to 1/150th - Both really top out at about 1/125th on my tester. I went ahead and did a "buy-it-now" on one for $25.00 (including some unmarked glass) as a "let's see what this puppy can do" project. Making the timing circuit should be very easy, but I'd like to know the proper control voltage so I don't fry the solenoid. Thanks in advance for any help ya'll can throw my way.