The UL listed Intelligent Fire Alarm System. D-TECTRON fire alarm systems can be configured with just a few devices for small size building applications, or networked with many devices to protect a large campus or a high-rise building. Simply add additional peripheral equipment to suit the application. Our advanced technology delivers supports the installers to do complete installation easily through simple steps. The inherent fault-tolerant characteristics of Analog/Address- able Technology boosts the reliability of D-TECTRON fire alarm systems. When combined with D-TECTRON smoke and heat detectors, these systems deliver a level of reliability and dependability for both small to medium size applications.
Heat detectors are vital for life safety, as often the heat from a fire can be detected before smoke buildup happens. This can give the few extra minutes needed to evacuate on time and save lives.
DT521 is a listed Addressable combination Rate of Rise/Fixed Temperature Heat Sensor (RHA) compatible with D-TECTRON Fire Alarm Control panel.
| Model | DT521 |
| Nominal Voltage | 24VDC |
| Voltage Range | 17.6 to 28VDC |
| Standby Current | 0.1mA |
| Alarm Current | 1mA |
| Fixed Temperature Rating | 135˚F (57.2˚C) |
| Rate-of-Rise Detection | 15˚F/min. (8.3˚C/min.) |
| Installation Temperature | 32˚F to 100˚F (0˚C to 38˚C) |
| Operating Humidity | 0% to 93% RH |
| Diameter | 4.13 in. (105mm) |
| Height (with base) | 1.87 in. (47.5 mm) |
| Weight (with base) | 4.3 oz (121 g) |
| Mounting | DT500/DT501 Base |
| Mounting Orientation | Ceiling only |
| Spacing | 50 feet (15 m) |
Comprehensive self-diagnostics
Superior performance and reliability
Sleek and easy for installation
Compatible with D-TECTRON DT106 Fire Alarm Control Panel
Optional remote alarm indicating LED
Low profile, discrete and unobtrusive
Designed for EMI compatibility
UL listed to Standard 521
Base and adaptor are UL 521 Listed
The D-TECTRON Fire Alarm System complies with the following UL Standards and NFPA 72, International Building Code (IBC),
Fire Alarm System requirements: UL 864, 10th Edition, UL268\UL521\UL1638\UL1971\UL464\UL38
FM Approval Ongoing
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