XM-8DR-BRD I/O expander is dedicated to systems using RACS CLK/DTA protocol. Expander offers eight NO/NC inputs and eight relay outputs with single con- tact 1.5 A/30 VDC rated. Optionally, XM-8DR-BRD can be used as standalone device (without communica- tion with master device), when so, its outputs are con- trolled by signals applied to its inputs.