Gralab 555 Electronic Digital Switching Timer

Replacing the 545/645, the 555/655 are ready to go to work for you. These timers are excellent performers for timing kinetic experiments, start and stop times for gas chromatography, safety shutoff on critical equipment, centrifuges, x-ray equipment and quality control analysis. The 555/655 have an instantly repeatable time cycle, and these digital circuits react little to power line interference and none to frequency variations. The 555/655 series features: Features Extensive timing capacity...from .1 second to 59 minutes 59.9 seconds Ability to count down or up Ability to function as a stop watch Display made up of 5 LED's...1/2' inch to report minutes, seconds and tenths of a second Automatic reset feature with the capability to repeat a cycle over and over by pushing a single button LED lights indicate which outlet is on LED light indicator for count down/up function Display intensity options: 3 brightness levels / Off Variable audio signal: One second long tone at end of cycle Warning tone at 30 second intervals One second interval metronome No tone 2 outlets: Cycle on or off time/Function under timer control or independently 2 output jacks...provide logic level compatible signals parallel with the corresponding AC outlets   Specifications Time Range .1 second to 59 minutes 59.9 seconds in minutes, seconds and tenths of a second Accuracy Better than ±.015% @ 10 seconds (25°C ambient, no load) Repeatability: + .005% @ 10 seconds (25°C ambient, no load) Max. Lamp Load 500W Max. Resistive Load 1000 W Max. Motor Load 1/4 HP Number of Outlets 2 Function under timer control or independently Audible Options 4: One second long tone at end of cycle Warning tone at 30 second intervals One second interval metronome No tone Memory Single Display 5 1/2' inch LED's 3 brightness levels/ Off Auto Reset Yes Foot Switch Yes Voltage 100-130 VAC, 50/60 Hz Housing Material Plastic