The FAS‑420‑TM Series Aspirating Smoke Detectors are specially designed for direct connection to the Local SecurityNetwork improved version with the extended range of features. These active fire detection systems are for early fire detection in zone and equipment protection, as well as for the monitoring of air-conditioning units or ducts. The exact location of the fire can be pinpointed using the innovative fire source identification. The aspirating smoke detectors are fitted with the latest fire detection technology. Their resistance to contamination, the temperature compensation of the sensor signals and initialization in relation to air pressure ensure reliable operation even under difficult environmental conditions.
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| LSN power supply |
15 V DC . . 33 V DC |
| Auxiliary power supply |
15 V DC . . 30 V DC |
| LSN current consumption |
6.25 mA |
| Current consumption from auxiliary power supply |
Fan voltage |
| 9 V |
10.5 V , 12 V |
| - Starting current |
150 mA , 150 mA , 150 mA |
| - In standby |
105 mA , 125 mA , 145 mA |
| - With alarm, device variants FAS‑420‑TM and FAS‑420‑TM‑R |
110 mA , 130 mA , 150 mA |
| - With alarm, device variant FAS‑420‑TM‑RVB |
140 mA , 160 mA , 180 mA |
| Displays on the device |
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| FAS‑420‑TM |
FAS‑420‑TM‑R , FAS‑420‑TM‑RVB |
| Operation |
Green LED , Green LED , Green LED |
| Malfunction |
Yellow LED , Yellow LED , Yellow LED |
| Alarm |
Red LED , Red LED , 2 red LEDs (pre-alarm and main alarm) |
| Fire location display |
- , 5 red LEDs (zones A-E) , 5 red LEDs (zones A-E) |
| Smoke level display |
- , - , Yellow smoke level display with 10 segments (1-10) |
| Infrared port |
IR transmitter/receiver , IR transmitter/receiver , IR transmitter/receiver |
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| Conical duct connections Ø 25 mm |
1x aspiration pipe 1x air return |
| Aspiration pipe |
1 pipe |
| Air return |
1 pipe |
| Cable bushings: |
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| Housing base sides |
8 x M 20 and 2 x M 25 |
| Housing base rear wall |
4 x M 25 |
| Dimensions (W x H x D) |
140 x 222 x 70 mm |
| Weight |
Approx. 0.8 kg |
| Housing material |
Plastic (ABS) |
| Housing color |
Papyrus white (RAL 9018) |
| Protection category according to EN 60529 |
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| Without air return |
IP 20 |
| With pipe section 100 mm/pipe bend |
IP 42 |
| With air return |
IP 54 |
| Permissible temperature range: |
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| FAS‑420‑TM series Aspirating Smoke Detector |
-20 °C to +60 °C |
| PVC pipe system |
0 °C to +60 °C |
| ABS pipe system |
-40 °C to +80 °C |
| Permissible relative humidity (non-condensing) |
Max. 95% |
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| Sound power level (at 9 V fan voltage) EN27779, 1991 |
40 dB(A) |
| Response sensitivity (light obscuration) |
0.5 to 2.0%/m |
| Life cycle of fan (at 12 V and 24 °C) |
60,000 hrs |
