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Sensor Type
Contact Closure
Contact Closure / Relay
# of Channels
4 Channels
# of Relays
4 Relays
Ease of Installation
Intermediate (Installs < 60 minutes)
Linear Corp.
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Monitor 4 Alarm Sensors Miles Away from Your Home or Business
Linear Corporation 4-Channel Long-Range Transmitter
Linear Corporation 4-Channel Long-Range Transmitter
Linear Corporation 4-Channel Long-Range Transmitter
Item# 7426BX
Price: Normally $274.94 
Hot Deal $184.97
Free shipping on orders over $175 - See Details


  • Up to 10 miles of line-of-sight range
  • Weather-resistant case
  • Accepts N/O or N/C inputs
  • Fully supervised (loop status, low battery, link integrity)

Essential Info

No longer do you need to be on the premises in order to monitor the status of the sensors around your home. When triggered by any of up to four external sensor switches, the 4-Channel Long-Range Transmitter will send a 10-watt, 27.255 MHz, digital-encoded, FSK-modulated signal to a companion receiver (sold separately), which will verify the digital code, activate its output, and trigger the remote device. A 1-channel, 4-channel, or 16-channel long-range receiver is required and sold separately. You'll also need a 3-foot whip antenna (sold separately).


What's Included

  • Transmitter
  • Instructions
  • More Info

    Fully Supervised Transmission
    The transmitter has full supervision capabilities. If the "status" option is selected, the transmitter sends hourly status signals to its receiver. If these signals cease, the receiver will indicate trouble by activating its status output after four hours. Contact supervision allows the receiver's outputs to follow the transmitter's inputs, staying activated as long as each transmitter input is activated. Alternately, an "auto-restore" option can be selected, causing a momentary receiver output each time any transmitter input is activated. Each input can be configured for either N/O or N/C contacts (switch selectable). Two 8-position switches set the unit's system code. This code must be matched in the companion receiver. There are 65,536 different system codes possible.

    Multiple Power Options
    Power for the transmitter can come from an external regulated 12 VDC power supply or from a 12-volt battery. If the power supply voltage drops below 10.5 volts, a low battery message will be included with any signal transmitted, causing the receiver's low battery output to activate.

    The transmitter is housed in a rugged weather-resistant metal enclosure with a sturdy SO-239 antenna connector and a water-tight wiring strain relief bushing. During transmissions, the red operation indicator (visible through a window on the case) lights. If the input voltage is low, the indicator will blink during transmissions.



    Manufacturer:Linear Corporation
    Manufacturer Product No.:SST00084 or MR164T-XT-4
    Dimensions:4.25" L x 2.5" W x 6.25" H
    Weight:1.5 lbs. (0.68kg)
    Operating Temperature:-4° to 140° F (-20° to 60° C)
    Operating Frequency:27.244 MHz
    Bandwidth:6 KHz
    Number of Codes:65,536
    Code Setting Method:DIP switch programming
    Operating Voltage:12 to 15.0 VDC
    Operating Current:Standby: 15 µA; Transmitting: -2.0 Amps at 12 VDC
    Housing:Black, weather-resistant, anodized aluminum enclosure with removable end caps to provide wiring and programming access; end caps
    RF Output Power:12 Watts typical
    Loop Response Time:500 msec
    Code Transmissions:Alarm, restore, status, and low battery
    Status Report Time Frame:70 minutes
    Transmit Time:1 second
    Antenna Impedance:50 Ohms
    Warranty:1 year, limited


    2 Ratings
    5 star: 100%  (2)
    4 star: 0%  (0)
    3 star: 0%  (0)
    2 star: 0%  (0)
    1 star: 0%  (0)
    Average Customer Rating
    (2 customer ratings)
    Share your thoughts with other customers
    DEBORAH -- white, GA   6/1/2013
    Excellent service.
    CLARA -- bellingham, WA   11/17/2003
    Worked great! Fairly easy to set up. I thought the hole size for external cables (power, sensors, etc.) should have been a little larger.
    STEWART -- san antonio, TX   10/4/2003
    very good product
    DAN -- sallisaw, OK   8/18/2003
    Good quality product.


    4-Channel Long-Range Receiver  3-Foot Long-Range Antenna W/18ft Coax Cable  12V DC 2000mA Power Supply   
    4-Channel Long-Range Receiver  3-Foot Long-Range Antenna W/18ft Coax Cable  12V DC 2000mA Power Supply   

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