8 Supervised Zone Inputs
Adds eight independent EOL-monitored hardwired zones for PIRs, reed switches, glass-break detectors or duress buttons.
2 Programmable Outputs
Two onboard outputs drive relays, strobes, buzzers or status indicators mapped to panel events.
Fast SDI2 Connection
Links to the Solution 4000 over the plug-and-play 4-wire SDI2 data bus with simple address configuration.
Flexible Mounting
Compact black PCB snaps into the panel cabinet or a remote enclosure to cut field wiring distances.
Which Bosch panel does the B228 work with?
The B228 is designed for the Bosch Solution 4000 panel and connects over its SDI2 bus.
How many zones and outputs does it add?
It adds 8 hardwired supervised zones (not further expandable) and 2 programmable outputs.
How is the B228 wired to the panel?
Via the 4-wire SDI2 data bus. It mounts as a PCB inside the panel cabinet or a remote sub-enclosure.
What power does it need?
12 VDC supplied directly from the panel's SDI2 bus, so no separate supply is normally required.
What sensors can connect to the zones?
Any standard hardwired detector — PIRs, reed switches, glass-break sensors or duress buttons — using EOL resistors.
What are the module dimensions?
The black PCB measures 73.5 x 127 x 15 mm and mounts on standard enclosure studs.
