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GraLab GR300S 60-Minute Darkroom Timer

B&H # GR300S MFR # GR300S
GraLab GR300S 60-Minute Darkroom Timer


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You Pay: $199.95

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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
UPC: 782365003512
Minimum Setting: Minimum Setting
Range Total: 60 minutes, by minutes and seconds
Automatic Buzzer Constant tone
Accuracy ±0.015% at maximum setting
Voltage Input voltage 100 to 130 VAC, 50 or 60 Hz
210 to 250 VAC, 50 Hz
Power Rating AC Outlet: 120 VAC
Lamp Load: 600 W maximum
Load Resistive: 1200 W maximum
Motor: 1/3 HP maximum
Dimensions 7.5 x 7.5 x 2.5" (190.5 x 190.5 x 63.5 mm)
Weight 3.00 lb (1.36 kg)
Packaging Info
Package Weight 2.7 lb
Box Dimensions (LxWxH) 11.9 x 9.4 x 5.3"
GraLab GR300S 60-Minute Darkroom Timer
  • Limited 1-Year Warranty
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