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Bus Isolator

  • Protects the system bus against short-circuit, overcurrent, overvoltage, AC 110/230 V intrusion, and pulse interference
  • Prevents external disturbances from affecting bus communication and system stability
  • Integrated bus extender supports 500 m extension with signal reshaping
  • Supports front and rear tamper protection
  • Reports protection events to the control panel
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Available models:

DS-PR521
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DS-PR521
Data Sheet

Specification

  • Bus interconnection
  • Bus-extender√
  • Bus technologyHalf-Duplex RS-485
  • Bus wiring4-Core Alarm Cable (at least 2×0.5mm²+2×0.22mm²)
  • Power supply - general
  • Input voltage12 VDC nominal (9~16 VDC), powered by bus
  • Quiescent current15 mA @12VDC
  • Max. current50 mA @12VDC
  • Power supply - Bus power output
  • Output capacity12VDC nominal (9~16 VDC), 3 A
  • Output protection3 A PPTC
  • Environmental
  • Operating temperature-10°C to 50°C (14°F to 122°F), indoor use only
  • Storage temperature -20°C to 60°C (-4°F to 140°F)
  • Relative humidity10% ~ 90% non-condensing
  • Physical
  • Dimension (W × H × D) 110 × 155 × 31 mm
  • 220 g
  • Installation methodWall mount
  • Compliance
  • Electrical conformityCE, CB
  • EN 50131Security Grade 2, Environmental Class II
*Product performance is based on testing in a controlled environment. Your results may vary due to several external and environmental factors.

Specification

Bus interconnection
Bus-extender
√
Bus technology
Half-Duplex RS-485
Bus wiring
4-Core Alarm Cable (at least 2×0.5mm²+2×0.22mm²)
Power supply - general
Input voltage
12 VDC nominal (9~16 VDC), powered by bus
Quiescent current
15 mA @12VDC
Max. current
50 mA @12VDC
Power supply - Bus power output
Output capacity
12VDC nominal (9~16 VDC), 3 A
Output protection
3 A PPTC
Environmental
Operating temperature
-10°C to 50°C (14°F to 122°F), indoor use only
Storage temperature
-20°C to 60°C (-4°F to 140°F)
Relative humidity
10% ~ 90% non-condensing
Physical
Dimension (W × H × D)
110 × 155 × 31 mm
220 g
Installation method
Wall mount
Compliance
Electrical conformity
CE, CB
EN 50131
Security Grade 2, Environmental Class II
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Specification
Bus interconnection
  • Bus interconnection
  • Bus interconnection
  • Bus interconnection
Power supply - general
  • Power supply - general
  • Power supply - general
  • Power supply - general
Power supply - Bus power output
  • Power supply - Bus power output
  • Power supply - Bus power output
Environmental
  • Environmental
  • Environmental
  • Environmental
Physical
  • Physical
  • Physical
  • Physical
Compliance
  • Compliance
  • Compliance
*Product performance is based on testing in a controlled environment. Your results may vary due to several external and environmental factors.

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