Bosch Security B308

SDI2 8-Output Expansion Module
Provides 8 programmable relays.

  • Factory New
Brand: Bosch Security Part #: 55202 Categories: , Manufacturer Part #: B308


The B308 Octo-output Module is suitable for applications requiring Form C outputs to operate auxiliary systems or to display fire system status at remote annunciators. The B308 can interface with building components such as HVAC, door lock releases, and stairwell pressurization for complete system control and monitoring.

Industrial, commercial, and institutional facilities are typical installations for the B308 module. The eight on- board outputs can be programmed to activate on system alarm, system trouble, individual zone or point faults, and through remote control by authorized users.


Weight 0.4 lbs
Dimensions 0.60 × 2.90 × 5.00 in



Bosch Security

Production Status



  • Programmable output functions
  • Easy to read switch addressing
  • Provides eight Form C relays
  • 1 A at 5-24 VDC relay contact rating
  • Allows remote control of outputs


B308 SDI2 8-Output Expansion Module
Bosch Security – Data Sheet
Octo-output Module; B308
Bosch Security – Installation Manual