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  • Zone Expander (For 451 Alarm)
    • 8% less than eBay

    Zone Expander (For 451 Alarm)

    Compatibility:  STS-4xx Series (Full List in Description)

    • Adds Up To 24 More Wireless Zones
    • Add Up to 8 Wired Zones

    • This zone expander will increase the number of zones that are allowed on our STS-451 panel. It can add an additional 24 wireless zones or an additional 8 wired zones to the alarm system.
    Not rated yet
    • $21.95
    21 Reward Points
  • Wired Microphone (For 451 Alarm)
    • 5% less than eBay

    Wired Microphone (For 451 Alarm)

    Compatibility:  STS-451 Alarm Systems

    • Listen-In Through Microphone By Phone
    Not rated yet
    • $9.49
    9 Reward Points
  • Wired Mechanical Tamper Switch
    • 20% less than eBay

    Wired Mechanical Tamper Switch

    Compatibility:  STS-4xx Series (Full List in Description)

    • Perfect for Protecting Alarm Boxes
    • Audible Tamper Alarm
    • Comes With Tamper Switch and Mounting Hardware
    Not rated yet
    • $1.99
    1 Reward Points
  • Standard 4-Wire Phone Line (White 5'3'')
    • 50% less than eBay

    Standard 4-Wire Phone Line (White 5'3'')

    Compatibility:  All alarms & devices with a standard phone jack

    • 5' 3'' Long Wire w/ RJ11 Jacks
    • Landline (POTS) & Internet Phone (VOIP) Compatible
    • White in Color
    • 4-Wire Phone Line (Tip/Green & Red/Ring)
    Not rated yet
    • $0.99
  • Standard 2-Wire Phone Line (Gray 6')
    • 50% less than eBay

    Standard 2-Wire Phone Line (Gray 6')

    Compatibility:  All alarms & devices with a standard phone jack

    • 6 Foot Long Wire w/ RJ11 Jacks
    • Landline (POTS) & Internet Phone (VOIP) Compatible
    • Gray in Color
    • 4-Wire Phone Line (Green/Red/Yellow/Black)
    Not rated yet
    • $0.99
  • Signal Repeater
    • 6% less than eBay

    Signal Repeater

    Compatibility:  STS-4xx Series (Full List in Description)

    • Extend Range 400 Ft
    • Wireless Transmit Distance ≥5000 Feet
    • Wireless Receiving Distance ≥390 feet
    • Wireless Emitting Frequency Of 433MHz
    Not rated yet
    • $32.95
    32 Reward Points
  • Motion Detector Mounting Bracket
    • 34% less than eBay

    Motion Detector Mounting Bracket

    Compatibility:  STS-4xx Series (Full List in Description)

    • Easy Angle Adjustment
    • Replacement Mounting Bracket for Motion Detectors
    Not rated yet
    • $0.99
  • Motion Detector Mounting Bracket
    • 34% less than eBay

    Motion Detector Mounting Bracket

    Compatibility:  STS-4xx Series (Full List in Description)

    • Easy Angle Adjustment
    • Replacement Mounting Bracket for Motion Detectors
    Not rated yet
    • $0.99
  • Magnetic Strip for Door/Window Sensors (For STS4-DORP Door/Window Sensors)
    • 21% less than eBay

    Magnetic Strip for Door/Window Sensors (For STS4-DORP Door/Window Sensors)

    Compatibility:  STS4-DORP Door/Window Sensors

    • Replacement Magnet Strip for STS4-DORP Sensors
    • Leave Window Open Without Bypass

    • Extra magnetic strips are perfect for leaving your windows open at night without bypassing the zone. If the window is moved by a burglar during the night, the alarm system will still sound an alarm.

    Not rated yet
    • $0.99
  • Magnetic Strip for Door/Window Sensors (For STS4-DORN & Other Door/Window Sensors)
    • 21% less than eBay

    Magnetic Strip for Door/Window Sensors (For STS4-DORN & Other Door/Window Sensors)

    Compatibility:  STS4-DORN Door/Window Sensors

    • Replacement Magnet Strip for STS4-DORN Sensors
    • Leave Window Open Without Bypass

    • Extra magnetic strips are perfect for leaving your windows open at night without bypassing the zone. If the window is moved by a burglar during the night, the alarm system will still sound an alarm.

    Not rated yet
    • $0.99
  • Magnetic Strip for Door/Window Sensors (For STS4-DORA Door/Window Sensors)
    • 20% less than eBay

    Magnetic Strip for Door/Window Sensors (For STS4-DORA Door/Window Sensors)

    Compatibility:  STS4-DORA Door/Window Sensors

    • Replacement Magnet for STS4-DORA Sensors
    • Leave Window Open Without Bypass

    • Extra magnetic strips are perfect for leaving your windows open at night without bypassing the zone. If the window is moved by a burglar during the night, the alarm system will still sound an alarm.

    Not rated yet
    • $1.99
    1 Reward Points
  • Double Sided Tape for Door & Window Sensors
    • 49% less than eBay

    Double Sided Tape for Door & Window Sensors

    Compatibility:  STS-3xx Series (Full List in Description)

    • Strong Double-Sided Sticky Foam Pads
    • Cut To Size of Door/Window Sensors
    Not rated yet
    • $0.50
All Products: 112 of 14