• 

  Weidmüller BB 4/AKZ2.5

• 

  Notifier by Honeywell BB-4

• 

  Arteche BF-4BB

• 

  Valco CV- 032G.BB.R 1 1/4"

• 

  TOSHIBA CORPORATION DTL-1B-B4 TSB

• 

  Sipos 2SA5511 2CEOO-4BB3-Z

• 

  Rosemount 3051TG1A2B21BB4M5Q4

• 

  Rosemount 3051TG2A2B21BB4M5Q4

• 

  Rosemount 3051TG2F2A21BB4I1Q4

• 

  Endress Hauser FTL51-AGE2BB4G4A