DBC01: Pair of surface mount wireless monodriectional infared photocells. 1 reciever + 1 battery operated transmitter.
DBC03: Surface mount bidirectional infared repeater module (side receiver + front transmitter). Range : 10m / 32' 8" ft.
DBC04: Same as above except with front reveiver and side transmitter.
DBS01: Pair of wireless bidirectional infared photocells with single contact output. Built-in receiver and external transmitter. For Bx-243, Bx and Bk series operators (Max range:10m / 32' 8" ft).
DBS02: Same as above except with double contact output.
DBCT: Surface mount battery-charged transmitter module to combine with DBS02. (Max range:10m / 32' 8" ft).
Batteries not inculded.