Bosch D7050TH Photoelectric Smoke & Heat Detector Head

The Bosch D7050TH is an addressable photoelectric smoke and fixed-temperature heat detector head designed for commercial fire protective signaling and compatible household fire warning applications. It combines a photoelectric optical smoke chamber with a 135°F (57°C) fixed-temperature heat sensor, providing dual-mode fire detection for areas where smoke detection alone may not be sufficient. The optical chamber uses a pulsed infrared light source and gated high-speed photodiode to detect smoke particles while reducing the effects of external light and providing strong dust immunity. The detector includes Bosch Chamber Check self-diagnostics and automatic sensitivity testing for system maintenance. A flashing LED provides visual operating and alarm indication, while the detector head can be removed for cleaning or replacement. The D7050TH installs into the required Bosch D7050-B6 two-wire multiplex detector base and operates from the compatible multiplex bus. Its off-white, high-impact, fire-retardant ABS housing measures approximately 4 inches in diameter by 1.3 inches deep.