Up for sale is a Grass SD9J Stimulator by Astro-Med Inc. – a dependable and versatile instrument for laboratory or research applications. This unit allows precise control of electrical stimulation parameters including frequency, delay, duration, and voltage. It’s equipped with multiple modes such as twin pulse, repeat/single stimulation, and bi/mono polarity outputs.

Model: SD9J

Serial Number: 97E0180G

Power Requirement: 105–130V / 50–60Hz

Max Power: 30 Watts

Condition:

• Powers on and the indicator lights function as shown

• All knobs, switches, and dials move freely

• Unit has visible cosmetic wear from use (light scratches/scuffs on casing)

• Sold as-is

• For professional use only – high voltage caution applies

Includes:

• The exact unit pictured

• No additional accessories