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Features BK1 BK2 BK3 BK4
Description Magnetic door contact Transmitter with 2 inputs Transmitter with 3 inputs Transmitter with 3 inputs and magnetic door contact
Compatible receivers P16, P32, P64, EXT116s, EXT11, KM25 P16, P32, P64, EXT116s, EXT11, KM25 P16, P32, P64, EXT116s, EXT11, KM25 P16, P32, P64, EXT116s, EXT11, KM25
Operating frequency 868 MHz 868 MHz 868 MHz 868 MHz
Communication range in building
Up to 100m Up to 100m Up to 100m Up to 100m
Communication with hopping code Selectable Selectable Selectable Selectable
2-way technology Yes Yes Yes Yes
Contact Open transmission Yes Yes Yes Yes
Contact Close transmission Yes Yes Yes Yes
Tamper Changed transmission Yes Yes Yes Yes
Battery low status transmission Yes Yes Yes Yes
Supervision transmission Selectable (every 1h for Grade 1, Custom; every 20 min for Grade 2 )
In-built magnetic contact  Yes   - Yes
In-built inputs for external detectors - 2 3 3
External detector = magnetic contact - - OK OK
External detector = roller type detector - - OK OK
In-built output to power the external detector - Yes (up to 20uA) - -
Unique ID number for magnetic contact Yes Yes - Yes
Unique ID number for every in-built input - Yes Yes Yes
Power supply Lithium battery, ½ AA, 3.6V Lithium battery, ½ AA, 3.6V Lithium battery, ½ AA, 3.6V Lithium battery, ½ AA, 3.6V
Battery life >3 years >2 years >2 years >2 years
White color model BK1 BK2 BK3 BK4
Brown color model BK1_br BK2_br BK3_br BK4_br
Overall dimensions W x H x L in mm 27 x 23.6 x 75 27 x 23.6 x 75 27 x 23.6 x 75 27 x 23.6 x 75
Operating humidity
0% - 70% 0% - 70% 0% - 70% 0% - 70%
Operating temperature -5oC up to +50oC -5oC up to +50oC -5oC up to +50oC -5oC up to +50oC
Production status In production In production In production In production
Latest firmware version BK1 v.2.002 BK2 v.2.002 BK3 v.2.002 BK4 v.2.002
Wiring manual Download  Download  Download  Download