LRR-4 - Viking Electronics

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Long Range 4 Channel Receiver

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Product Details

Viking’s model LRR-4 Long Range 4 Channel Receiver features an integrated receive antenna and can be used with Viking’s LRT-4 Long Range Wireless 4 Channel Radio Transmitters to create a high frequency, long-range (RFID) identification solution. The LRT-4 Transmitters have four buttons, each corresponding to its own Wiegand output on the LRR-4 Receiver.

The LRR-4 Receiver operates at 433 MHz allowing a transmission range of up to 400 ft (line of sight). The LRR-4 receiver has an adjustable read range, optional external antenna connector, terminal block with 4 channel Wiegand data output and a transducer and LED to confirm transmitter button press. The LRR-4 has a conformal coated circuit board mounted in a NEMA 4, 4x rated box for use in outdoor applications.


Use with the following Viking models to remotely activate relays for door/gate control, etc:

  • AES-2000: Accessible Entry System with ES-3 controller (DOD 202)
  • AES-2005: Accessible Video Entry System with ES-3 controller (DOD 204)
  • C-4000: Apartment / Office Entry Controller (DOD 164)
  • ES-1: Stand Alone Keyless Entry System (DOD 193)
  • ES-3: Entry System Controller (requires power adapter) (DOD 195)
  • K-1200-IP: VoIP 12 Button Apartment Entry Phone (DOD 271)
  • K-1205-IP: VoIP Apartment Entry Phone with Camera (DOD 274)
  • K-1270-IP: VoIP Apartment Entry Phone with Card Reader (DOD 274)
  • K-1275-IP: VoIP Apartment Entry Phone with Camera/Card Reader (DOD 274)
  • K-1700-IP: VoIP Entry Phone with Keypad (DOD 253)
  • K-1705-IP: VoIP Entry Phone with Keypad/Camera (DOD 254)
  • K-1770-IP: VoIP Entry Phone with Keypad/Card Reader (DOD 257)
  • K-1775-IP: VoIP Entry Phone with Camera/Card Reader (DOD 258)
  • K-1770-3: Entry Phone with Keypad and Card Reader (DOD 275)
  • K-1775-3: Entry Phone with Camera and Card Reader (DOD 280)
  • K-1900-8-IP: VoIP Entry Phone with Handset and Keypad (DOD 361)


  • Read range of up to 400 ft (line of sight)
  • Secure, digital, anti-playback wireless communications
  • 4 channels of 26 Bit Wiegand data output
  • Optional external antenna connector
  • LED and transducer transmitter feedback
  • Adjustable Read Range
  • Removable terminal block for easy wiring
  • Cable grommet included for sealing cable exit
  • CE mark


  • Cable Requirements
    24 AWG minimum, multi-conductor stranded with an overall foil shield, for example Belden 9540 or similar. Per the SIA’s Wiegand specification, maximum cable length is 400 feet (121.92 m).
  • Grounding
    Shield (drain) continuity must run from the Receiver to the access panel. Shield and reader ground must be tied together at the access panel and connect then to an earth ground at one point.
  • Power
    Power required is 12 VDC nominal at 120mA. The Receiver may be powered by the access panel. A linear power supply is recommended for best operation. Power Supply is not included, but can be powered directly from Viking model ES-1, K-1700-IP, C-4000, AES-2000, and AES-2005 entry systems. When used with an ES-3 a seperate 12 VDC power supply is required.
  • Mounting
    The Receiver may be mounted indoors or outdoors. The base of the enclosure includes a drill template providing mounting provisions to a wall box (standard North American and European), as well as pre-drilled holes in the four corners allowing mounting to a flat surface.
  • Read Range Adjustment
    As shipped, the Receiver is set for the maximum read range, which is nominally up to 400 feet. This may be reduced by adjusting the range pot in the counter-clockwise direction. Additionally, for optimal read range it is important that the Receiver be mounted as far from potential interference sources as possible. These sources may include, but are not limited to, large metal obstructions, as well as magnetic fields and radio transmissions. Note for each installation, read range may vary.
  • External LED Indicator (Beeper Switch must be set to ON in order for the external LED to operate)
    • Amber: Normal powered on state
    • Flash Green: An activated Transmitter button press has been received and processed
    • Flash Red: A non-activated Transmitter button press has been detected
    • Off: Receiver is not powered on, or failed to power up successfully (or Beeper Switch is turned to OFF)
  • Antenna Switch
    As shipped, the Receiver’s Antenna Switch is set in the INT position. If a separate antenna is to be used, then the switch should be set in the EXT position.
  • Beeper Switch
    As shipped, the Receiver’s Beeper Switch is set in the ON position. If the installation technician prefers to disable the beeper and External LED Indicator, then the Beeper Switch should be set in the OFF position.
  • 10-Pin Terminal Block – Refer to the information below for cabling to the Receiver:
    • AD0: Button One, Wiegand Data 0, Channel A (GREEN)
    • AD1: Button One, Wiegand Data 1, Channel A (WHITE)
    • BD0: Button Two, Wiegand Data 0, Channel B (GREEN)
    • BD1: Button Two, Wiegand Data 1, Channel B (WHITE)
    • CD0: Button Three, Wiegand Data 0, Channel C (GREEN)
    • CD1: Button Three, Wiegand Data 1, Channel C (WHITE)
    • DD0: Button Four, Wiegand Data 0, Channel D (GREEN)
    • DD1: Button Four, Wiegand Data 1, Channel D (WHITE)
    • GND: Power, 0VDC (Ground)
    • +VDC: Power, 12VDC Nominal