Edwards Signaling 721U 2-Wire Photoelectric Smoke Detector, with Remote Test Input and LED Output

Deliver consistent, code-compliant fire detection with the Edwards Signaling 721U 2-Wire Photoelectric Smoke Detector. Designed for facilities that demand dependable monitoring and low maintenance, the 721U uses a photoelectric sensor to detect smoldering and slow-developing fires earlier than ionization-only units. Its wired connectivity ensures continuous operation without battery concerns, while the remote test input streamlines routine testing and reduces service time for maintenance teams. The integrated bright LED output gives immediate visual confirmation of alarm and status at the device — an important benefit for onsite security and first-response personnel. UL 268 listing confirms the 721U meets industry safety standards and simplifies specifying the unit in commercial, healthcare, retail, and multi-tenant installations. Easy to mount and compatible with most two-wire fire alarm control panels, this Edwards Signaling smoke detector supports unified security and fire alarm systems for better lifecycle monitoring. Specify the 721U for reliable smoke detection and smoother maintenance workflows — contact us to add it to your next security or fire alarm project.

• Reliable, wired operation removes battery failure risk for continuous fire monitoring
• Photoelectric sensing for fast, accurate detection of smoldering fires common in commercial interiors
• Remote test input simplifies routine maintenance and verification for facilities teams
• Bright LED output provides clear visual status for onsite staff and first responders
• UL 268 listed for code-compliant installations and easy integration into fire alarm systems
• Compact design fits a wide range of security, surveillance, and building safety applications