Aux. Relay-Bus Digital Handset. Used With S.T.R. 'Bus' Type Handsets To Provide A Dry Contact Closure
AUX. RELAY-BUS DIGITAL HANDSET. USED WITH S.T.R. 'BUS' TYPE HANDSETS TO PROVIDE A DRY CONTACT CLOSURE.
AUX. RELAY-BUS DIGITAL HANDSET. USED WITH S.T.R. 'BUS' TYPE HANDSETS TO PROVIDE A DRY CONTACT CLOSURE.