Grass Instruments SIU8TB Stimulus Isolation Unit - Fair Condition 156530620041 but they are all defective

but they are all defective with issues

Includes Photic Adapter as pictured

Manufacturer Cradlepoint Model Number 170649-000 SKU 19-75806 Ref 23-108751

EX250-IE1 Output Blocks (6x): Expanding digital output capabilities

Grass Instruments SIU8TB Stimulus Isolation Unit - Fair Condition 156530620041 but they are all defectiveCondition Used Description Item was recently removed from working service and is in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in good condition showing minor scuffs scratches blemishes from previous use. Unit will have heavy discoloration. Includes Stimulus Isolation Unit as pictured. No additional items or accessories are included. Photos are of the actual unit for sale. Inventory is on hand and ready to ship.