To purchase

HCMC: +84-28-38 620 246
No TT8, Tam Dao, Ward 15, District 10, Ho Chi Minh city

HA NOI: (84-24) 36.415.733
No B02, Nguyen Huu Tho, Hoang Mai district, Ha Noi

Hochiki Conventional Smoke Detector

  • Photoelectric/heat smoke detector

Photoelectric/heat smoke detector

Code: SLR-24H
Manufacturers: Hochiki
Origin: USA
Download Catalogue: SLR-24H (437,26 KB)


The SLR-24H can be used in all areas where Photoelectric Smoke Detectors are required. The wide range smoke chamber makes the SLR-24H well suited for fires ranging from smoldering to flaming fires. NS-4 Series, NS-6 Series, HSC-4R or HSC-R Style bases may be used with the SLR-24H. Current interchangeable/compatible devices are the SIJ-24 ionization detector, SLR-24V photoelectric detector and the DCD-135°/190° heat detectors. All NS conventional devices are mechanically compatible with Hochiki America HSB, HSC and YBA type bases which may have been used in previous 


• Low profile, 2.2" high (with base)

• 2 or 4 wire base compatibility, relay bases available

• 135°F latching heat sensor

• Heat sensor protected by a built-in guard

• Highly stable operation, RF/Transient protection

• Low standby current - 45A at 24VDC

• Two built-in power/sensitivity supervision/

• Non-directional smoke chamber

• Vandal resistant security locking feature

• Removable smoke labyrinth for cleaning or

• Automatic Sensitivity window verification function meets outlined requirements in NFPA 72, Chapter Inspection, Testing and Maintenance. installations. Please check individual panel listings for compatible bases. 


Light Source GaAlAs Infrared Emitting Diode

Heat Sensor 135°F

Rated Voltage 17.7 - 30.0 VDC

Working Voltage 15.0 - 33.0 VDC

Maximum Voltage 42 VDC

Supervisory Current 45A @ 24 VDC

Surge Current 160A max. @ 24 VDC

Alarm Current 150mA max. @ 24 VDC

Ambient Temperature 32°F to 120°(0°C to 50°C) 98% RH Non-Condensing

Color & Case Material Bone PC/ABS Blend

Sensitivity Test Feature: Automatic Sensitivity window verification test

Mounting: Refer to NS Conventional Detector Base Data Sheet

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Call: 08 38 620 246