INSTALLER

Multiple 857 Connections

To EZB-1SC connecting block with up to 4 SaphIR K2 keypads

To SaphIR K2 keypads

Multiple 857

Connections

Multiple groups of up to four K2 keypads can be linked together by using successive Russound 857 IR connecting blocks as shown in the diagram to the left. Each IR connecting block must have its own 1201A power supply.

Each Russound 1201A power supply supports a maximum of four K2 keypads.

When using shielded 22/4 cable, use one twisted pair for power and ground, and the other twisted pair for status and IR signal. Always drain the shield by connecting it or the drain wire to the ground terminal on the IR connecting block as shown in the top diagram on the next page.

When using CAT-5 cable, drain the orange/white and green/ white wires by connecting them to the ground terminal on the IR connecting block as shown in the bottom diagram on the next page.

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