Check the listing for details. Pickering GPIB Relay Interface Switch System 10-910L-001 10-921-001 10-410-002. Condition: Used. Listed at 299.99 USD. Up for sale is one chassis and modules that is used, sold as pictured, tested for turn on only and will be sold in used, un refurbished and working condition featuring a Pickering Programmable Relay Switch System with Chassis, Back plane and power supply per model number 10-910L-001, 10-921-001, 10-410-002. See Pictures for details and add 45.00 for shipping fedex ground within the continental USA not including Alaska, Canada, Mexico, HI, PR or any out of country shipments. Extra charges apply. Qs eight for seven two one seven five five for six System Number 5All sales are final after 30 days sold as is where is with no warranties expressed or implied including any paypal reversals or charge backs. Email with questions to eliminate any mistakes in ordering and purchasing