834LBR: Viper Plus Piezoelectric Vibration Sensor, brown

The Nortek Security & Control Family of Brands

This product is discontinued

The 834LBR (Brown) Viper Plus is a frame mountable piezoelectric sensor with a custom ACIC microchip. The sensor responds to the directly conducted energy released by breaking glass. As a result, the Viper will not false alarm from any ambient sounds, or low-frequency vibrations. Additionally, the Viper can be adjusted for single or double knock response to further increase false alarm rejections. There is also a Hi-Low sensitivity jumper that is used to increase or decrease the overall sensitivity and the potentiometer is used to fine-tune the adjustment.


  • Range: Up to a 10 ft. radius
  • Hi-Low sensitivity adjustment
  • Auto reset alarm relay
  • Latching alarm LED
  • Double-Knock for alarm verification
  • Indoor use only
  • UL Listed


  • Alarm relay: SPST Form A contact
  • Operating voltage: 10.5-15 VDC
  • Current draw: 13 mA maximum
  • Temperature tolerance: 0F to 120F
  • Tamper circuit: Normally closed contact 50 mA @ 24 VDC
  • Sensor dimensions: .90″ W x 3.35″ H x 1.00″ D
  • Uses Model 815 calibration tool
  • Order number: 0-834001

Installation Manual

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