SILENT KNIGHT SD500-ARM Relay Module

The Silent Knight SD500‑ARM is an addressable relay module engineered for integration with Honeywell/Silent Knight IntelliKnight fire alarm control panels. It includes two isolated sets of Form C (SPDT) dry contacts, each rated at 2 A @ 30 V DC or 0.6 A @ 120 VAC. The module supports flexible configuration via DIP‑switch programming, enabling the relays to be mapped to specific zone or point‑based conditions for actions such as HVAC shutdown, elevator recall, door‐holder release, or auxiliary notification. A visible polling LED on the cover plate simplifies addressing and troubleshooting. Compact in design, it installs into a standard 4‑inch square electrical box with an ivory plastic cover plate. It draws minimal current (about 0.55 mA standby), and meets UL, FM, CSFM, MEA and NFPA 72 standards. Suitable for commercial and institutional fire installations, the SD500‑ARM facilitates precise control of external systems upon alarm events.