Keri Systems SB-593 2nd Door and I/O Expansion Board for PXL500, Tiger II Controller Satellite Board

The SB-593 Satellite Expansion Board expands the capabilities of compatible control systems by adding 8 general purpose inputs and 4 general purpose outputs. This expansion board connects directly to your existing controller to enable management of a second door or configure inputs and outputs for custom security applications. With simple jumper configuration, two inputs and two outputs can be dedicated to second door control, while remaining ports support flexible general-purpose integration. Ideal for multi-door access control installations or systems requiring additional sensor and relay connectivity.