Edwards sdr-32K remote annunciator

Edwards sdr-32K remote annunciator

EDWARDS SDR-32K Remote Annunciator
Thirty-two Open/Collector Outputs. Same as SDR-32 but current limiting must be done externally. Used for interface to graphics or external relays, incandescent lamps, etc. Power for external devices must be provided by external P.S. 100 mA maximum per output @ 24VDC.
NEW IN BOX, I only opened one for pictures