Honeywell Home 4229 Wired 8-Zone Expander Relay Board for ECP Bus Zone VISTA Control Panels

Expand your addressable security system with this eight-zone expander featuring two relay outputs. Designed for ECP bus systems, it adds up to eight supervised Class B zone inputs with 1K end-of-line resistors and broad 300-ohm tolerance. Includes two programmable form C relays for flexible control. Simple DIP switch addressing allows placement anywhere along the four-wire addressable bus. Each zone is supervised for open, shorted, or normal circuit conditions. Includes eight 1K end-of-line resistors. Compatible with VISTA-20HW control panels and wired directly to console terminals.