The Simplex TrueAlert ES Visible LED Notification Appliance (Model Series 59VO) is a wall-mounted, multi-candela strobe designed for fire alarm systems, offering reliable visible alerts in commercial and public spaces. Featuring adjustable candela settings (15–185 cd), it meets NFPA 72 and ADA requirements with synchronized strobe operation and energy-efficient LED technology. Its compact design supports Class B “T-tapped” wiring for simplified installation and reduced costs, while advanced diagnostics like Self-Test and Magnet Test modes ensure quick validation of functionality and wiring integrity. Available in red or white housings with customizable “FIRE” labeling, it is UL, ULC, CSFM, and FM certified for safety and compliance. Ideal for hospitals, schools, and retrofit projects, it operates seamlessly with Simplex IDNAC SLC controllers and adapts to US or European electrical boxes via optional accessories. The appliance operates at 23–29.5 VDC, ensuring consistent performance under battery backup, and functions within a temperature range of 32°F to 120°F (0°C to 49°C). Models include low/high-candela variants (e.g., 59VO-WRF series) and appliance-only options (59VO-APPLWR/APPLWW) for flexibility. Compliance with UL 1971, ULC S526, and ADA standards guarantees reliability, while wiring supervision enhances circuit integrity. Accessories like European adapter plates (59AP-EUROBB) cater to diverse installation needs. Designed for efficiency and durability, it includes mounting hardware and supports rapid fault detection, making it a trusted solution for life-safety applications.