The Gralab Model 451 is a dual memory switching timer/ intervalometer. It has all of the features as the 450, plus two independent, separately programmable memories allowing for operation as a single cycle switching timer as well as a continuously recycling intervalometer.
It also has a third time option that is adjustable in increments from 1 to 99 minutes.
| Package Weight | |
| Box Dimensions (LxWxH) |
I had to read the instructions several times before it sunk in about the intervalometer settings, but once I figured it out, it worked great. If you have large finger tips though, it might be difficult to use (small buttons). To stop the automatic mode you have to make sure you go from auto start to single start during the right sequence or the light will come on when you don't want it to. I am able to use it with my old Omega D-ii condenser enlarger, and my Beseler 4x5 MXT w/color head at fractions of seconds. This is a huge benefit, especially with film testing. The intervalometer is programmable. This is a great upgrade from the time-o-lite. I really like it, but it does take time to get used to it.
Definitely a worthwhile upgrade from my old analog clock face style timer. GraLab has been around for years producing a quality product.