Removed from fully functional specialised professional laboratory equipment, German cyrogenic (liquid nitrogen) monitoring equipment which became obsolete.Equipment was only cannabilised because its function was extremely limited and considered only of interest to specialised interests in the electronics community (equipment was for cryogenics liquid Nitrogen flow control)However some of the parts inside are extremely interesting…this is one of themBurr Brown are were well recognised for their excellent D to A and vice versa converters, then acquired by Texas Instruments.Burr Brown12 bit digital to analog converterPart number: DAC811JP28 pin DIL Plastic caseDevice has been carefully removed under ESD precautions and stored in ESD packaging – of course all pins are straight!Brief Specifications:Precision voltage referenceDirect interfacing with uP or Computers12 bit D/A converter with voltage amplifier at the outputFast and highly accurate deviceFull datasheet information is available from me if you need it