Simplex 562-856 — Style B (formerly Class B) motherboard for 4100-series panels, without transient suppression.
In a 4100 bay the intelligence sits on a plug-in daughter card while the field wiring lands on the motherboard behind it. The 562-856 is the Style B termination board: it holds the field terminals and passes power and CPU communications to the next slot. It is ordered when a card goes into a spare slot, or when a surge or wiring fault damages a board.
- Simplex 4100 parts list description: Motherboard, Style B (w/o Suppression)
- Shown as MOTHERBOARD ASSY 562-856 in Simplex 579-205 for 4100/4120-5004 and 4100-5005 8-zone Class B security wiring
- Also listed as the motherboard for 24-point I/O and 64/64 LED/switch daughter cards
- Connector J1 faces right, header P1 left; four torx screws hold it to the chassis
Do not cross-order: 562-799 is the suppression version, 562-823 is Style D (Class A) and 562-855 is the master motherboard. Match the panel parts report.
