Siemens FDL241-9, Technical Manual

Page: 32 / 90

Structure and function 3
Accessories
32
Building Technologies
007016_i_en_--
Fire Safety 2012-09-07
3.4.6 Short distance filter DLF1191-AB

For toning down the infrared ray over short
distances

Distance: 5…8 m

Compatible with:
– Linear smoke detector FDL241-9

Order no.: BPZ:4933160001
3.4.7 Extraneous light filter DLF1191-AC

For filtering extraneous light during a high level of
extraneous light

Compatible with:
– Linear smoke detector FDL241-9

Order no.: BPZ:5221480001
3.4.8 Detector heating unit DLH1191A

For applications where there is danger of moisture
condensation or icing

Incl. terminal block for the connection

Compatible with:
– Linear smoke detector FDL241-9

Order no.: BPZ:4787970001
See also

Installing the detector heating unit (optional) [➙ 66]