Check the listing for details. BOSCH B308 SDI2 8-Output Expansion Module V1.3.4. Condition: Open box. Listed at 69.95 USD. SDI2 8-Output Expansion ModuleThe 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 onboard outputs can be programmed to activate on system alarm, system trouble, individual zone or point faults, and through remote control by authorized users.FeaturesProgrammable output functionsEasy to read switch addressingProvides eight Form C relays1 A at 5-24 VDC relay contact ratingAllows remote control of outputs