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DO-16 Darlington Output card 16 outputs, designed to interface directly with the labjack U12 or U12 oem USB IO module. Each output is NPN and capable of driving upto 1 amp (Note: Maximum power rating of darlington driver chip should be adhered too). All IC's are socketed for easy raplacement and LED shows each output state. 

 http://labjack.com/u12

 

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Options are available with plug / socket terminal connections.

Price Each £122.33 GBP + delivery