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SD-388
Sentek
8531100000
Conventional Photoelectric Smoke Alarm
All of the Sentek’s SD388 series detectors meet the requirements of UL268 and UL521( ordinary) and EN54-7 and EN54-5( A2S) for use in fire alarm signaling systems.They are intended for use in 2-wire/4-wire Class A or B supervised zone circuits. The SD388 series detectors are subject to panel compatibility limits and compliance with corresponding NFPA 72 standards, local codes, and ordinances.
The SD388 series include 2-wire and 4-wire detectors, which provide fast and reliable response for photoelectric smoke detection. While the smoke and heat detection circuits operate independently,their outputs being "OR' connected.
• 2 or 4 wire models
• Advanced detection and discrimination algorithms
• Easy installation and maintenance
• Sleek low-profile housing design
• Durable sensor head, no need for replacement
• SMD circuit board design-satisfactory quality and reliability guaranteed
• AR (Auto Reset) function for security systems (optional for 4 wire models) Sensor base option:
standard and Shottky Diode
• Five-year limited warranty
SD388- 2 | 2 wire photoelectric smoke alarm |
SD388- 2L | 2 wire photoelectric smoke alarm with remote LED output |
SD388- 4 | 4 wire photoelectric smoke alarm (12/24VDC) |
SD388- 4B | 4 wire photoelectric smoke alarm with Buzzer (12/24VDC) |
SD388- 4AR | 4 wire photoelectric smoke alarm with auto-reset function (12/24VDC) |
SD388- 4ARB | 4 wire photoelectric smoke alarm with auto-reset function and Buzzer (12/24VDC) |
Notice: SD388-4 with 48Vdc available
Model | 2/4 wire | Thermal | Voltage DC | Standby Current (Max.) | Alarm Current 12/24V | Surge Current (Max.) | Star-Up Time (Max.) | Permissible Current (Max.) | Frequency | Alarm contact | Base model |
SD388-2 | 2 | — | 10〜33V | 40μA | 50mA | 80μA | 30S | 80mA | 1～3 Seconds | — | P/N762001 |
SD388-2L | 2 | — | 10〜33V | 40μA | 50mA | 80μA | 30S | 80mA | 1～3 Seconds | — | P/N764001 |
SD388-4 | 4 | — | 12/24 V | 40μA | 30/40mA | 80μA | 30S | — | 1～3 Seconds | Form A | P/N764001 |
SD388-4AR | 4 | — | 12/24 V | 40μA | 30/40mA | 80μA | 30S | — | 1～3 Seconds | Form A /Auto Reset | P/N764001 |
SD388-4B | 4 | — | 12/24 V | 40μA | 30/40mA | 80μA | 30S | — | 1～3 Seconds | Form A | P/N764001 |
SD388-4ARB | 4 | — | 12/24 V | 40μA | 30/40mA | 80μA | 30S | — | 1～3 Seconds | Form A /Auto Reset | P/N764001 |
Smoke Sensitivity | 0.08~0.14db/m(EN standard) or 0.98~2.40%/FT Obscuration (UL standard) |
Reset Voltage | less than 1 volt |
Reset Time | less than 1 second |
Alarm Indicator | LED continuously emitting red light |
Remote Output | 25 mA max., diode gate |
| Operating Temperature | -10°C to 50°C |
| Permissible Current | 80mA maximum |
| Humidity | 0 to 95% RH, no condensation or icing |
| Alarm Contact | (for 4-wire) NO or NC Operation, Form A: 1.0A@30VDC/0.5A@125VAC |
| Dimensions | 102mm (dia) x 43mm (ht) with base |
| Weight | 135g/set with base |
Conventional Photoelectric Smoke Alarm
All of the Sentek’s SD388 series detectors meet the requirements of UL268 and UL521( ordinary) and EN54-7 and EN54-5( A2S) for use in fire alarm signaling systems.They are intended for use in 2-wire/4-wire Class A or B supervised zone circuits. The SD388 series detectors are subject to panel compatibility limits and compliance with corresponding NFPA 72 standards, local codes, and ordinances.
The SD388 series include 2-wire and 4-wire detectors, which provide fast and reliable response for photoelectric smoke detection. While the smoke and heat detection circuits operate independently,their outputs being "OR' connected.
• 2 or 4 wire models
• Advanced detection and discrimination algorithms
• Easy installation and maintenance
• Sleek low-profile housing design
• Durable sensor head, no need for replacement
• SMD circuit board design-satisfactory quality and reliability guaranteed
• AR (Auto Reset) function for security systems (optional for 4 wire models) Sensor base option:
standard and Shottky Diode
• Five-year limited warranty
SD388- 2 | 2 wire photoelectric smoke alarm |
SD388- 2L | 2 wire photoelectric smoke alarm with remote LED output |
SD388- 4 | 4 wire photoelectric smoke alarm (12/24VDC) |
SD388- 4B | 4 wire photoelectric smoke alarm with Buzzer (12/24VDC) |
SD388- 4AR | 4 wire photoelectric smoke alarm with auto-reset function (12/24VDC) |
SD388- 4ARB | 4 wire photoelectric smoke alarm with auto-reset function and Buzzer (12/24VDC) |
Notice: SD388-4 with 48Vdc available
Model | 2/4 wire | Thermal | Voltage DC | Standby Current (Max.) | Alarm Current 12/24V | Surge Current (Max.) | Star-Up Time (Max.) | Permissible Current (Max.) | Frequency | Alarm contact | Base model |
SD388-2 | 2 | — | 10〜33V | 40μA | 50mA | 80μA | 30S | 80mA | 1～3 Seconds | — | P/N762001 |
SD388-2L | 2 | — | 10〜33V | 40μA | 50mA | 80μA | 30S | 80mA | 1～3 Seconds | — | P/N764001 |
SD388-4 | 4 | — | 12/24 V | 40μA | 30/40mA | 80μA | 30S | — | 1～3 Seconds | Form A | P/N764001 |
SD388-4AR | 4 | — | 12/24 V | 40μA | 30/40mA | 80μA | 30S | — | 1～3 Seconds | Form A /Auto Reset | P/N764001 |
SD388-4B | 4 | — | 12/24 V | 40μA | 30/40mA | 80μA | 30S | — | 1～3 Seconds | Form A | P/N764001 |
SD388-4ARB | 4 | — | 12/24 V | 40μA | 30/40mA | 80μA | 30S | — | 1～3 Seconds | Form A /Auto Reset | P/N764001 |
Smoke Sensitivity | 0.08~0.14db/m(EN standard) or 0.98~2.40%/FT Obscuration (UL standard) |
Reset Voltage | less than 1 volt |
Reset Time | less than 1 second |
Alarm Indicator | LED continuously emitting red light |
Remote Output | 25 mA max., diode gate |
| Operating Temperature | -10°C to 50°C |
| Permissible Current | 80mA maximum |
| Humidity | 0 to 95% RH, no condensation or icing |
| Alarm Contact | (for 4-wire) NO or NC Operation, Form A: 1.0A@30VDC/0.5A@125VAC |
| Dimensions | 102mm (dia) x 43mm (ht) with base |
| Weight | 135g/set with base |
