DSC LC-171


Dual-Tech Outdoor Motion Detector (Dual PIR & Microwave) with Pet Immunity

Availability: Please Call for Availability

  • Factory New
  • Material Obsolete
Brand: DSC FireAlarm.com Part #: 51185 Category: Manufacturer Part #: LC-171 Tag:


The LC-151 and LC-171 are dual technology motion detectors that combine passive infrared and microwave detection with pet immunity.

The LC-151 and LC-171 detectors provide improved outdoor protection against intruders, before they make it too far on to a property or close to premises. With advanced digital signal processing, these detectors provide accurate analysis of body dimensions and differentiation from backgrounds and pets or other animals to ensure reliable detection and false alarm immunity. Digital signal processing provides consistent communication because the signal is resistant to electrical (either radio frequency or electromagnetic) interference. Upon quick analysis of the signal from the detector, if an intruder is identified, the device will instantly notify the alarm system.


Weight 1.10 lbs
Dimensions 3.20 × 3.90 × 7.90 in





Production Status


Product Notes

Replacement: LC-181


  • Frequency: 24.125 GHz
  • Microwave detection based on Doppler concept
  • N.O. & N.C. Relays switched at the same time
  • Pet immunity up to 77 lb (35 kg)
  • 16 levels of PIR sensitivity adjustment and 3 microwave sensitivity groups
  • Temperature compensation
  • Microcontroller signal processing
  • Front and back tamper protection
  • Audible indication of walk test and intruder detection
  • Unique waterproof sealed plastic design
  • Detection range: up to 39 ft (12 m)
  • Detect human intruders walking or running
  • No maintenance required
  • High RFI/EMI immunity
  • Protection from: direct sunlight, wind up to 30 m/sec, snow and rain, small animals, removal of the top cover and removal from mounting bracket
  • Rain and dust proof: IP65

Dual-Tech Outdoor Motions Detector; LC-151 and LC-171


DSC - Data Sheet

Dual-Tech Motion Sensor (Dual PIR & Microwave) with Pet Immunity; LC-171


DSC - Installation Instructions & User Manual