Auto shut off electricity precise timer

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glbeas

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Rick A

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GraLab 505 or 525 digital timers can be set up to 59 minutes 59.9 seconds. The 525 is a dual channel and can be set to switch between channels automatically or manually or just to one channel. The 505 is a digital single channel similar to the electro-mechanical 300 timer. I own both plus a 300 and a Time-O-lite P-79 timer. I use the GraLab 300 for my UV exposure units(I have two units).
 

Vaughn

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My exposure unit has two sets of UV lights ( I doubled it to shorten the exposure time), so I'd need a timer with two outlets. I guess I can use one for enlarger and another for safelight? My UV is LED, so I don't see the problem?

Plug in 3 lights...

 
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hiroh

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Why all this vintage bricks? Has anyone made a timer in the last 50 years? :smile:
 

guangong

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I use my ancient Gralab for film development because I walk around when processing film in daylight tanks because of its large size and visibility, and a Time-o-light for enlarger’s small size and proximity to enlargers. My G. Was bought in 1960s and still going strong.
 

FotoD

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At 90 seconds you would have to fiddle with the switches for 10s to overexpose 1/6 of a stop, which is barely perceptible. So I wouldn't sweat about it.

It is convenient to be able to start the exposure and walk away though. So that may be a reason to find a timer.
 

ic-racer

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Why all this vintage bricks? Has anyone made a timer in the last 50 years? :smile:

Who posted anything about vintage?

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