The CSA-DCB allows you to install a Cig-Arrete sensor unit to a concrete ceiling. It has both 16mm and 20mm entries for plastic conduit or mini-trunking to allow you to install the sensor on the surface of the ceiling. The conduit base can also be used as a backstop for when the unit is to be installed on a suspended ceiling. The tile is sandwiched between the conduit base and sensor unit.
