Analystical Scientific Instruments (ASI) Solvent Delivery Module 500 TI Pump.  Working and in great overall condition.  Comes with power cord and all items shown in picture.  

Details from manufacturer specification: 
Accuracy:  +/- 1 % or +/- 2 µL/min. whichever is greater
+/- 1 % or +/- 1 µL/min. whichever is greater (Micro)
Precision: 0.25 % from 0.1 mL/min. to 10 mL/min. at 20 degrees C
0.25 % from 0.05 mL/min. to 4 mL/min. at 20 degrees C (Micro)
Pulsation: <1.0% DeltaP/P at > 1,000 PSI
Programming:  60 methods with 20 lines each, methods can be linked to create complex gradient programs.
Remote Start/Stop: Controlled by external contact closure
Dimensions: 10-1/4” W x 14” D x 6-1/2” H
Weight:  16 lbs. (7.3 kg)
Power Input:  85 to 264 VAC, 47 to 63 Hz, 60 watts