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- [ Electronic Timer/
Intervalometer ]
- [ Universal Timers ]

Reliable and accurate time after time. The 451's automatic reset makes it even quicker and easier. Uses: industrial and time-lapse photography, animal feeding and stimulus, water analysis, centrifuges, sloenoid switching, to name a few.

Independent, separately programmable memories control on/off cycles. Use as a single cycle switching timer or in tandem as a continuously recycling intervalometer.

Timesetting i easy with 451's rotary switch. Brightness can be adjusted or switched off on the 1/2" high, 2-digit LED display. Left on, it gives a running countdown of the cycling memory.

Three time ranges are available: 1-99 minutes, 1-99 seconds, .1-9.9 in tenths of a second.

Choose the audio you prefer. One second end of cycle tone; a metronome which beeps once every second throughout the cycle... or no audio.

AC power can be switched through an AC outlet and logic level compatible signal through an output jack. The on/off state is the same as the AC outlet.

Compact and solid, the 451 measures 3 1/2" x 4" x 8". It's durable; stands up to years of service. Set on a table or wall mount.

Specifications :

• Accuracy : Better than ±.01% @ 1 second relative to power frequency (20°C ambient, no load).
• Repeatability : ±.005% @ 1 second relative to power frequency (20°C ambient, no load).
• Temperature range : 0° to 55°C
• Humidity : 0 to 95% noncondensing
• Voltages : Input voltage 100-130 VAC, 50 or 60 Hz (U.S. and Canada), 210-250VAC, 50 or 60 Hz for use in other countries.
• Power rating of AC outlets : @120VAC
• Max Lamp Load 600W
• Max Resistive Load 1200W
• Max Motor Load 1/3 HP
• UL & CSA listed

GraLab's Model 450 Printing Timer is ideal in the darkroom. Gives instant response with push-button controls; two countdown ranges, and many of the 451's features.