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GraLab Model 555 Electronic Digital Timer

B&H # GR555 Mfr # GR555
No Longer Available

The Gralab 555 Electronic Digital Timer has a "touch-type" dust and moisture resistant keypad that protects it in darkroom/lab conditions.

Digital timing circuits cycle off a quartz crystal time base with little reaction to power line interference and none to frequency variations.

This model has extensive timing capacity ranging from a tenth of a second timing up to 59 minutes, 59.9 seconds with automatic reset; repeat a cycle over and over by pushing a single button.

Half-inch high, red LED's display minutes, seconds and tenths. Adjust brightness from "high" to "off". independently of the timed switch.

Compact and lightweight, The Gralab 555 at 2.25 x 4.5 x 9.25", can be positioned at a 20-25 degree angle on its own stand, sit on rubber pads which provide traction on flat surfaces, or wall mounted using keyhole slots on its underside.

This models feature a permanent plastic boot over the power and outlet control switches to prevent contamination or corrosion.

Temperature range from 0-55C, Humidity range from 0-95% non-condensing.
Features a permanent plastic boot over the power and outlet control switches to prevent contamination or corrosion.
Supplied with removeable stand; Can be inclined 20-25 degrees for flat surface use.
Built-in metronome.
Counts either up or down.
Time Range .1sec - 59mins/59.9secs.
Maximum Wattage (Load) 500w
Maximum Resistive Load 1000w
Number of Outlets Two, 600w/each: Can be set to function in normal safelight/enlarger sequence, turned off, or turned on continuously
Audible Options Four: End of cycle tone, once every second, tenth of a sec. every half minute with metronome for last 10 secs. and tone at end, or none at all
Memory One
Display Five digit LEDs displayed in red half-inch numerals - two for minutes, two for seconds and one for tenths of secs. Three positions possible: Full or half intensity, or off.
Auto Reset Yes
Foot Switch Yes, optional.
Voltage 120v/50/60Hz. (Available in 220v model)
Dimensions 2.25 x 4.5 x 9.75" (57.2 x 114.3 x 248 mm)
Weight 2.55 lb (1157 g) (shipping weight)
Specialties Table or wall mountable

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