For 1ft (30.5cm) to 10ft (3m) ducts with air velocity between 300 ft./min. to 4000 ft./min. (1.52m/s to 20.3m/s)
Easy duct tube installation through the housing cuts installation time
Detector test and reset without removing covers
Clear cover allows quick visual inspection
Tube filters, dust immune smoke detector, and easy disassembly for cleaning reduce maintenance time and cost
| Current (alarm) | Dependent on the control panel that must limit the alarm current to 100mA maximum. |
| Current (standby) | 0.12 mA maximum |
| Maximum RMS Ripple | 25% of DC input |
| Power-up time | 22 sec maximum |
| Voltage, operating | 8.5VDC to 32VDC from two-wire loop. Optional 24VDC/VAC from control panel or external supply. |
| D340 with D344-RT, D344-RL, and External Power | |
| Loop | External |
| Power | 8.5V to 32V , 24 V |
| Alarm Current | < 0.120mA , 5mA |
| Standby Current | < 0.170mA , 0.030mA |
| Trouble Current | Current limit to 100mA , 170mA in remote test |
| D340 with D344-RT, D344-RL without External Power | |
| Loop | |
| Power | 8.5V to 32V |
| Alarm Current | < 0.140mA |
| Standby Current | < 0.170mA |
| Trouble Current | Current limit to 100mA |
| D340 without D344-RT, D344-RL without External Power | |
| Loop | |
| Power | 8.5V to 32V |
| Alarm Current | < 0.130mA |
| Standby Current | < 0.150mA |
| Trouble Current | Current limit to 100mA |
| Air velocity | 300ft./min to 4000ft./min (1.5m/s to 20.3m/s) |
| Relative humidity | 0% to 95%, non-condensing |
| Temperature, operating | +32F to +120°F (0°C to +49°C). For UL listed requirements, the operating temperature range is +32°F to +100°F (0°C to +37.8°C). |
| Package Dimensions (LxWxH) | 18.9in. x 7.5in. X 7.8in. (48cm x 19cm x 19.8cm) |
| Product Dimensions (LxWxH) | 15.5in. x 4.3in. x 6.5in. (39.5cm x 11cm x 16.5cm) |
| Material | High‑impact fire‑retardant polymer plastic |
| Weight GrossNet | 4.23lb. (1.92kg)3.84lb. (1.74kg) |
D285DH 导管感烟头，2/4线，12/24V
Detects the large smoke particles which typically result from wood, paper, and fabric combustion
商业类型： D285DH
产品编号： 4.998.140.344
D344-RL 远程指示器板
Used with the D340 Series Duct Smoke Detector Housings
商业类型： D344-RL
产品编号： 4.998.140.354
D344-RT 远程测试/指示器板，24V
Use with a D340/D341/D342 or D343 (legacy product) Duct smoke housing or D296/D297 Long‑range beam smoke detector.
商业类型： D344-RT
产品编号： F.01U.024.868
D344-1.5 样品管，管式，1.5'/45.7cm
长度45.7厘米（1.5英尺）
商业类型： D344-1.5
产品编号： F.01U.029.219
D344-3 样品管，管式，3'/91.4cm
长度91.4厘米（3英尺）
商业类型： D344-3
产品编号： F.01U.029.175
D344-5 样品管，管式，5'/152cm
长度1.52米（5英尺）
商业类型： D344-5
产品编号： F.01U.029.174
D344-TF 导管过滤器，20件
管式火灾探测器抽样管的可更换过滤器（1包20个）
商业类型： D344-TF
产品编号： 4.998.137.961
上海市长宁区虹桥临空经济园区福泉北路333号203幢8楼
(联系就说在DAV音视工程网上看到的)
communication@cn.bosch.com
021-2218 2569
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