China UL Listed Intelligent Fire Alarm System Fixed Temperature Rate of Rise Heat Detector Dt521

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.
Feature
- Fixed temperature and rate-of-rise
- 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

SpecificationNominal Voltage24VDCVoltage Range17.6 to 28VDCStandby Current0.1mAAlarm Current1mAFixed Temperature Rating135˚F (57.2˚C)Rate-of-Rise Detection15˚F/min. (8.3˚C/min.)Installation Temperature32˚F to 100˚F (0˚C to 38˚C)Operating Humidity0% to 93% RHDiameter4.13 in. (105mm)Height (with base)1.87 in. (47.5 mm)Weight (with base)4.3 oz (121 g)MountingDT500/DT501 baseMounting OrientationCeiling onlySpacing50 feet (15 m)

Engineering Specifications
The DT521 is an intelligent Heat Detector UL listed device according to UL 521 for Fire
Protective Signaling Systems for indoor use with both fixed temperature alarm and rate
of rise alarm characters. It features a slim design which combines visual appeal with a
high standard of reliability. The detector has a Microcontroller Unit (MCU) performing
comprehensive self diagnostic tests, and result analysis. The DT521 is intelligent,
addressable, and takes one address on the Signaling Line Circuit (SLC) of the fire alarm
control panel.
Installation
Wiring
Option Detector base Model DT501
Installation and Wiring
NOTICE: The installation manual shall be left with the owner/user of this equipment.
importANT: This detector must be tested and maintained regularly following NFPA 72
requirements. At a minimum, cleaning should be performed annually.
FIRETECH provides wide-ranging of Addressable/Conventional Fire Alarm Sytstem and products (UL/EN54), Please feel free to contact us for more details if you have any enquiry.