Darkroom photographic timer

The Model 300 Darkroom timer has been improved. Displays minutes and seconds in complete darkness.   The 60-minute time span can be configured in minutes for development and seconds for increasing control. With two hands, you can set the time in seconds, minutes, or combinations of seconds and minutes.

A combination time/focus switch controls an enlarger or printer and a safelight from two independent outlet receptacles. Each outlet can handle 750 watts.

This model also can be used with a relay for heavier loads. Easy to read numerals on a large 6½" diameter face. Luminated by phosphor fluorescence.

Input voltage: 

100 to 130 VAC, 50 or 60 Hz (U.S. and Canada); 

210 to 250 VAC, 50 or 60 Hz for use in other countries.