KERI SB-593 SATALITE EXPANSION BOARD

Keri SB-593 PXL-500 Satellite Expansion Board

SB-593 satellite board for PXL-500 panels adding 8 general-purpose inputs and 4 outputs; jumpers allow low-cost second-door control using two inputs and two relays. :contentReference[oaicite:7]{index=7}