Simplex 4100-0620 — Basic Transponder Interface Card (TIC) for 4100ES and 4100U fire alarm control units.A Simplex transponder is a remote cabinet carrying initiating and notification hardware away from the main panel, and the TIC is the card that makes it answer to the panel. It is an addressable device holding the Remote Unit Interface input from the host CPU, the audio riser interface and the port for the other bay modules. Rated 24 VDC, operating range 18 to 33 VDC Output 8 V at 1 A, 100 mV peak-to-peak ripple, for the bay modules Input current 36 mA maximum with nothing attached and no 8 V load RUI wiring 18 to 12 AWG, supervised and power-limited Class B reaches 2,500 ft to any device; Class A loop 2,500 ft Up to 31 transponders per panel; mounts in Block A of the bay This is the card alone and not a transponder: the assembled unit is 4100-9600, bay equipment and power distribution interface with this card fitted. 4100-0625 is the local mode TIC, which holds a transponder in general alarm when it loses the host. The riser cards are 4100-0621 analog and 4100-0622 digital.