System Sensor PC2WL-LF L-Series Indoor Selectable Output Low Frequency Sounder Strobe, 2-Wire, Ceiling Mount, "FIRE" Marking, White

Designed for trusted, code-compliant protection in sleeping spaces and high-risk facilities, the System Sensor PC2WL-LF L-Series low-frequency sounder strobe delivers powerful audible and visual notification where it matters most. This 2-wire, ceiling-mount sounder strobe meets the NFPA 72 low-frequency requirement with a 521 Hz ±10% square-wave tone while offering field-selectable candela settings (15–177 cd) and High/Low tone options to optimize visibility and current draw for nursing homes, hotels, and multi-tenant buildings. Installers benefit from a plug-in design that minimizes intrusion into the back box, a universal mounting plate with onboard shorting spring for quick continuity checks, and compatibility with legacy SpectrAlert devices and the MDL3 sync module for seamless system integration. With 24V DC operation, durable white housing, and a clear FIRE marking, the PC2WL-LF supports fire alarm, security, and monitoring systems with reliable, code-ready notification. Specify the System Sensor PC2WL-LF for efficient installs and dependable alerts—contact us to order or integrate into your next security/fire alarm project.

• Ensures NFPA-compliant sleep-space notification with a 521 Hz ±10% low-frequency square-wave tone for faster occupant awakening
• Field-selectable candela and tone settings let you balance visibility and current draw across diverse indoor applications
• Plug-in ceiling-mount design with universal mounting plate and shorting spring speeds installation and minimizes wiring faults
• 2-wire, 24V DC compatibility and backward electrical compatibility with SpectrAlert systems simplify retrofits and upgrades
• Clear FIRE marking and high-output strobe improve visual notification for security, monitoring, and fire alarm systems