Linear Home Security Passive Infrared Motion Detector DXT-54


Linear Home Security Passive Infrared Motion Detector DXT-54

SKU: DXT-54 Categories: , ,

The Model DXT-54 Passive Infrared Motion Detector Transmitter is a battery powered passive infrared motion detector with a built-in transmitter designed for use with Linear’s DX format receivers. This transmitter can be used in a variety of motion detection applications. When the passive infrared sensor detects motion in its field of view, the transmitter sends a digitally coded wireless signal to its companion receiver.

The digital DX code format features over a million possible codes. The DX transmitters are precoded at the factory to unique codes, so no field coding is required. The DXT-54 can send two different signals: alarm and low battery.

In a typical installation, the motion detector is mounted indoors in a corner or on a wall between six and eight feet high. The sensor will monitor the infrared level in its detection pattern. If the level increases or decreases rapidly (as when a person or animal moves through the area) the transmitter triggers, sending an alarm signal to the receiver.

The unit is powered from a 9-Volt alkaline battery. The battery’s life can be up to three years depending on the area’s traffic. When the battery gets low, the test indicator will flash and a low battery signal will be sent to the receiver when the detector senses motion.

To conserve battery life, during normal operation, the detector can trigger the transmitter a maximum of once every four minutes.

For setup and testing, pressing the detector’s test button places the unit in walk test mode for four minutes. The installer can walk in front of the unit while viewing the red test indicator through the detector’s lens to determine the detection area.

In walk test, an alarm signal is sent each time the walk test indicator lights. During normal operation, the detector requires a pulse count of three events in eight seconds before sending an alarm transmission.

General Specifications

  • Dimensions: 3.2 in W x 4.4 in H x 1.75 in D (82 x 112 x 45 mm)
  • Power: Two 9V Alkaline batteries
  • Current Consumption:
    15 mA transmitting, 4 mA walk test,
    8 µA standby, 15 µA timer mode
  • Battery Life: Three years (typical)
  • Battery Saver Timer: 4-minute software timer, rearms after alarm transmission
  • Measured Range:
    700 feet in open air, one quadrant;
    500 feet minimum in open air (four quadrant test)
  • Accessories: Mounting hardware, including screws, double-stick tape
  • Code Outputs: Alarm, low battery
  • Detector: Balance dual element, pyroelectric
  • Installed Lens: Standard Fresnel lens, 24 facets, 9 main, 8 intermediate, 5 short, 2 creep
  • Detection Pattern: 30 feet x 30 feet
  • PIR Sensitivity: Preset, non-adjustable, pulse count of 3 with 8-second detection window
  • Operating Frequency: 315MHz


  • Alarm and low battery transmissions
  • Walk-test mode
  • Fresnel lens with 24 facets
  • Battery saver circuitry
  • 9-volt alkaline battery supplied