Fire-Lite SD355T Fire Alarm Smoke + Thermal Detector Head - This advanced diagnostic sensor provides reliable, multi-criteria life safety protection by combining photoelectric smoke detection with fixed-temperature thermal sensing. - 135°F fixed temperature rating - 15 to 32 VDC operating voltage - 300 µA standby current - 0.5% to 4.0% per foot smoke sensitivity range - 2.1 inches height with base

Unlike legacy smoke detectors that rely on a single sensing element, this intelligent device utilizes sophisticated algorithms to distinguish between nuisance alarms and actual fire conditions. By integrating both thermal and optical detection, it offers a more robust and responsive monitoring solution than standard single-technology sensors found in older facility infrastructures.

Enhanced Detection Performance

The SD355T utilizes advanced digital signal processing to maintain high precision in diverse environments, minimizing false triggers while ensuring rapid response times. Its integrated thermal sensor provides a critical secondary layer of validation, allowing the system to verify fire signatures with greater speed and reliability, which is essential for maintaining code compliance and protecting high-value assets across commercial and industrial properties.