Patton TD-5401-L5B
Isolator for T1 (DS-1) or ISDN PRI Interface,1310nm Singlemode LC optics, TD Package, Includes AC Power Adapter
Patton Electronics warrants your product to be free from physical defects in material and workmanship for a period of 1-year from the date of the original retail purchase. If you discover a defect covered by this warranty, Patton will repair or replace the product at their option using new or refurbished components.