Bus input/output module for connecting 4 wired detectors (NO/NC) or 4 detection lines (with up to 5 contacts) and 4 switching outputs (38V/500mA) to the System 9000 bus. NO/NC magnetic contacts, motion detectors or mechanical contacts can be connected to the 4 inputs. Each detection line can be assigned its own reaction, such as fire, flood or burglar alarm. A detection line can be wired using single or double resistance monitoring with adjustable resistance values (max. 10 kOhm). This enables existing systems to be easily converted. An integrated measuring tool for the resistance values enables convenient diagnosis of the detection lines. In the factory setting, the 4 outputs respond to the control panel's switching outputs 1 to 4. The assignment can be changed using the software; combinations of the switching outputs are also possible. A load of 500mA/38V can be switched potential-free across all 4 outputs. Power supply for external devices: 12V DC, max. 200mA. Can be installed in the mounting box 9000BD1/2 or directly in the control center. Occupies 4 addresses in the system when registered. Power supply via bus, quiescent current consumption: 11mA (all inputs on GND), I-calc =26mA, incl. 10x 1kOhm resistors, operating temperature -10°C to +40°C, dimensions: 77 x 40 x 31mm.