Replacement for conventional T12HO and T8HO fluorescent lamps in double-sided sign applications, or as a direct-wire solution for new sign builds using mounting bracket accessories—eliminating the need for socket-powered wiring.
Covered by one or more Patents: list available at https://keystonetech.com/all-products/lamps/linear-ledtubes/sign-hero/patent Keystone Power Select technology (see Performance Specifications for details): 100%, 75%, or 50% output for cabinet depth flexibility Keystone Color Select Technology (4000/5000/6500K) Supports wider spacing in deeper cabinets, reduced power settings ideal for shallow sign faces Designed for retrofit double-sided sign applications and new sign construction Built-in flexible waterproof connectors no socket wiring required Direct-wire installation with quick-connect design for simplified wiring Up to 15% higher lumen output than traditional Sign Hero tubes 50,000+ hour rated lifetime 120–277V universal input voltage Integrated optical lensing ensures even light spread across the face Effective 360° beam distribution Rotatable end caps for precise light direction Over 50% more energy efficient than HO fluorescent lamps UL Classified: sign retrofit solution, evaluated to UL 48 / UL 879A standards Listed in the UL SAM Manual Compatible with Keystone’s optional mounting bracket accessories Operating temperature range: −30°C/−22°F to 55°C/131°F