The Simplex 4010‑9621 is a robust, addressable fire alarm control panel (FACP) designed for sophisticated fire detection and system control within mid-sized facilities. It features a two-line by 40-character super-twist LCD user interface that enables quick fault and alarm acknowledgment, configurable LED status indicators, and intuitive front-panel navigation. Built upon the 4010ES series architecture, it includes a powerful 6 A Enhanced System Supply (ESS) with integrated battery charger, and supports a two-loop IDNet communications channel along with a second IDNet 2+2 channel for expanded device support—ideal for up to 500 addressable points. With its modular block-space design, the panel allows adding auxiliary relays, network cards, DACT, and other functional modules. It’s UL‑, FM‑, and CSFM‑listed and comes in a sturdy, NEMA 1-rated steel cabinet with options for red or platinum finish. Its dual-bay cabinet design ensures flexibility and future expandability while maintaining reliability in fire and safety systems.