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The GRALAB GR300S 60-Minute Darkroom Timer is ideal for film processing, especially the precise timing required during color processing. This reliable and accurate 60-minute timer can be set in minutes for 4-color developing and seconds for enlarger control. The 2 hands permit quick setting by seconds, minutes, or combinations of seconds and minutes.
A suitable dual-cam mechanism provides good accuracy for long time intervals: ±0.015% at maximum dial setting. The 2 separate outlet receptacles control an enlarger or printer and safelight by a combination time/focus switch. Each outlet has a 600W-rated capacity for operating most film processing equipments. It can be used with a relay for heavier loads.
The case is made of durable plastic, withstands high impact, resists chemicals, and moisture, and is electrically non-conductive. The case has a recessed handle at the back and keyholes for wall mounting.
Plastic boot over the power switch prevents corrosion from chemicals or water
Contemporary, easy-to-read numerals on a large 6.5" (16.5cm) diameter face
Numerals, dial, and hands are luminous
Setting knob for fast fingertip control
Precision accuracy assured by an electric synchronous motor
Buzzer automatically signals end of developing period and can be heard above ambient noise levels
Sturdy plastic case with rubber base pads resists impact, chemicals, and moisture
Gray texture, non-slip finish has a contemporary look
Keyholes at the back simplify wall mounting
3-Wire grounded cord
In the Box
GraLab GR300S 60-Minute Darkroom Timer
Limited 1-Year Warranty
Table of Contents
Setting: Minimum Setting
Total: 60 minutes, by minutes and seconds
±0.015% at maximum setting
Input voltage 100 to 130 VAC, 50 or 60 Hz
210 to 250 VAC, 50 Hz