Relays & I/O Interfaces

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  • Speco Technologies RFM1A RF Modulator Channel 3/4

    Speco Technologies

    SKU: RFM1A

    Speco Technologies RFM1A RF Modulator Channel 3/4

    RF modulator converts composite video to Ch. 3/4 coax output

    • Selectable Ch. 3 or Ch. 4 output distributes video over existing coax plant.
    • Compact 5.5×5.4×2.0 in body fits rack or wall-mount in control room builds.
    • 2-year warranty backs continuous-duty operation in security distribution environments.
    $82.30 $81.99 Save $0.31
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  • Speco Technologies SPCOAX2 Coaxial Video Surge Protector (view 4)

    Speco Technologies

    SKU: SPCOAX2

    Speco Technologies SPCOAX2 Coaxial Video Surge Protector

    Passive coaxial surge protection for TVI/CVI/AHD/960H—no power needed

    • Passive design requires zero external power—safe to deploy at remote camera endpoints.
    • Compatible with TVI, CVI, AHD, and 960H—one SKU covers mixed analog camera fleets.
    • Inline coax connection installs in seconds with no signal reconfiguration required.
    $39.20 $38.99 Save $0.21
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  • Speco Technologies SPTVIVP TVI Video and Power Surge Protector (view 7)

    Speco Technologies

    SKU: SPTVIVP

    Speco Technologies SPTVIVP TVI Video and Power Surge Protector

    TVI video and DC 56V surge protection for 4K camera systems

    • Protects TVI video and DC 56V power lines from transient surges simultaneously.
    • Supports 4K (3840×2160) resolution, compatible with modern TVI camera deployments.
    • Outdoor-rated in a compact 2.6"×3.4"×1" housing with ONVIF Profile I compliance.
    $36.80 $35.99 Save $0.81
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  • Speco Technologies SPUTPVD UTP Data Surge Protector Terminal Conn

    Speco Technologies

    SKU: SPUTPVD

    Speco Technologies SPUTPVD UTP Data Surge Protector Terminal Conn

    Inline UTP surge protection for IP cameras and access control systems

    • Clamps surges up to 4 kV in 1 ns, protecting cameras and NVRs from transients.
    • Passive inline design requires no external power; insertion loss under 0.2 dB.
    • NDAA Section 889 Part B compliant; rated for 300 surge events at 100 A each.
    $41.50 $40.99 Save $0.51
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  • Speco Technologies SPVP Video & Power Surge Protector (view 3)

    Speco Technologies

    SKU: SPVP

    Speco Technologies SPVP Video & Power Surge Protector

    Dual-channel surge protection for video and 12V DC power lines

    • Dual-channel design protects coax video and 12V DC power circuits simultaneously.
    • Passive architecture requires no external power or network configuration to deploy.
    • NDAA Section 889 Part B compliant; backed by a 3-year manufacturer warranty.
    $78.25 $77.99 Save $0.26
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  • Speco Technologies TVIHD - Speco Technologies TVIHD TVI to HDMI Converter
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    Speco Technologies

    SKU: TVIHD

    Speco Technologies TVIHD TVI to HDMI Converter

    TVI to HDMI converter for legacy cameras on modern displays

    • Converts TVI camera signals directly to HDMI, eliminating DVR encoding overhead.
    • Compact 3.5 × 5.1 × 1.2 in form factor deploys easily in racks, consoles, or vehicles.
    • 3-year warranty and 12V 500mA power input simplify integration into standard deployments.
    $218.75 $217.99 Save $0.76
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  • Speco Technologies TVIUTP HD-TVI Balun over UTP (view 5)

    Speco Technologies

    SKU: TVIUTP

    Speco Technologies TVIUTP HD-TVI Balun over UTP

    HD-TVI video over standard Cat5e/Cat6 UTP cabling, no power needed

    • Passive design requires no external power, reducing system complexity at each node.
    • Supports 50Hz–60MHz bandwidth (-3dB) over Cat5e/Cat6, preserving HD-TVI signal integrity.
    • Compact 0.6"×2"×0.6" form factor fits tight conduit and junction box installations.
    $11.55 $10.99 Save $0.56
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  • Speco Technologies TVIUTP4 4-Port TVI over UTP Balun

    Speco Technologies

    SKU: TVIUTP4

    Speco Technologies TVIUTP4 4-Port TVI over UTP Balun

    4-port TVI balun for HD video over Cat5e/Cat6 cabling

    • Transmits four independent 5MP TVI streams simultaneously over Cat5e/Cat6 cabling.
    • Supports up to 2592x1944 resolution, preserving full HD detail across all four channels.
    • Compact 4.3"×3.2"×1" form factor fits telecom racks or wall enclosures; 3-year warranty.
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  • Speco Technologies TVIUTPA - Speco Technologies TVIUTPA Active TVI Video Balun (Transmitter/Re

    Speco Technologies

    SKU: TVIUTPA

    Speco Technologies TVIUTPA Active TVI Video Balun (Transmitter/Re

    Active TVI balun for 8MP video over extended cable runs

    • Transmits and receives 8MP TVI video at up to 3840x2160 over extended cable runs.
    • ONVIF Profile I support integrates with compliant VMS and NVR platforms.
    • DC 12V operation in a 2.3"×1.9"×1.6" housing simplifies distributed deployments.
    $118.40 $117.99 Save $0.41
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  • Speco Technologies TVIUTPPT HD-TVI Balun over UTP with Pigtail (view 4)

    Speco Technologies

    SKU: TVIUTPPT

    Speco Technologies TVIUTPPT HD-TVI Balun over UTP with Pigtail

    HD-TVI balun for standard UTP cable runs up to 300 meters

    • Transmits HD-TVI video over Cat 5e/6 UTP up to 300 m, no coax required.
    • Passive design needs no external power, cutting installation complexity.
    • 50 Hz–60 MHz bandwidth with 32°F–131°F operating range suits most installs.
    $16.10 $15.99 Save $0.11
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  • Speco Technologies VGABNC VGA to Video Connector

    Speco Technologies

    SKU: VGABNC

    Speco Technologies VGABNC VGA to Video Connector

    VGA to video connector with ONVIF Profile I for IP surveillance

    • Converts VGA at 640×480 resolution to video output for hybrid surveillance integration.
    • ONVIF Profile I compliant, enabling plug-and-play use with standard video management systems.
    • Runs on regulated DC 5V/1A power, minimizing UPS load in low-power rack deployments.
    $151.90 $150.99 Save $0.91
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  • Speco Technologies VGAHD2 VGA to HDMI Converter (view 5)

    Speco Technologies

    SKU: VGAHD2

    Speco Technologies VGAHD2 VGA to HDMI Converter

    VGA to HDMI converter for legacy video to modern displays

    • Converts analog VGA to digital HDMI, preserving video fidelity for monitoring.
    • Plug-and-play installation; no software needed, ships with 5VDC 1A power supply.
    • Compact 6.62"×3"×1" form factor at 0.37 lbs fits rack, wall, or portable installs.
    $114.50 $113.99 Save $0.51
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  • Speco Technologies VIDGL Video Ground Loop Isolator (view 6)
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    Speco Technologies

    SKU: VIDGL

    Speco Technologies VIDGL Video Ground Loop Isolator

    Inline coaxial isolator eliminates 60 Hz hum in analog CCTV video

    • Passive galvanic isolation requires no power, enabling immediate inline deployment.
    • Eliminates 60 Hz and 50 Hz hum bars from coaxial video feeds without cable replacement.
    • Compact 5.6 x 3.8 x 1.3 in form factor fits tight rack or wall-mount installations.
    $55.30 $54.99 Save $0.31
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  • Speco Technologies VIDGLT HD-TVI Power Ground Loop Isolator (view 6)

    Speco Technologies

    SKU: VIDGLT

    Speco Technologies VIDGLT HD-TVI Power Ground Loop Isolator

    Passive HD-TVI ground loop isolator eliminates 60 Hz hum on coaxial runs

    • Passive design requires no external power, simplifying drop-in coaxial installations.
    • Eliminates 60 Hz ground loop hum on HD-TVI runs at 720p and 1080p without signal loss.
    • Installs at camera or DVR/NVR end on RG59/RG6 coax; backed by a 3-year warranty.
    $64.40 $63.99 Save $0.41
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  • Speco Technologies VIDUTP Video over Cat-5e or UTP Pair (view 5)

    Speco Technologies

    SKU: VIDUTP

    Speco Technologies VIDUTP Video over Cat-5e or UTP Pair

    Video and audio over Cat-5e or UTP—no coax or power needed

    • Passive operation requires no external power, simplifying retrofit and new deployments.
    • Transmits composite video and audio over Cat-5e or UTP, eliminating dedicated coax runs.
    • Supports NTSC and PAL analog formats, compatible with cameras, DVRs, and legacy gear.
    $47.40 $44.99 Save $2.41
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  • Speco Technologies Speco TVICOAXVP Active Balun TVI Video & 24V Power (view 5)

    Speco Technologies

    SKU: TVICOAXVP

    Speco TVICOAXVP Active Balun TVI Video & 24V Power

    TVI video + 24V power over single coax cable, up to 5MP

    • Carries TVI video up to 5MP (2592×1944) and 24V DC over a single coax run.
    • Accepts AC or DC 24V input, simplifying power sourcing across varied field installations.
    • Compact 1.9″×4.4″×1″ body fits wall boxes and conduit terminations; backed by 3-year warranty.
    $65.80 $64.99 Save $0.81
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Relays & I/O Interfaces

Relays and I/O interfaces enable integration between surveillance, access control, and external systems. These components support automation, alarm triggers, door control, and system expansion within commercial security deployments.

Plan Your Deployment

  • Input and output channel requirements
  • Voltage and load compatibility
  • Integration with cameras, NVRs, or control panels
  • Automation and trigger event planning
  • Expansion capacity for future system growth

Relays & I/O Interfaces — Engineering-Grade Installation Accessories for Commercial Deployments

This category covers 38 working models of relays & i/o interfaces sourced manufacturer-direct or through channel-direct US distribution. Build the rest of your system around the architectural choices below — compatibility, environmental rating, and lifecycle decisions made here propagate through every downstream component you specify.

What to Look For

Compatibility comes first. Mounting brackets, housings, and adapters are specific to the camera or device they support — the same manufacturer often makes parallel lines that don't share accessories. Verify the part number against the camera/device datasheet or compatibility list before ordering. Installation labor consumed troubleshooting a mismatched mount is the most common rework on commercial jobs.

Environmental rating determines material and finish. Indoor accessories typically use steel or aluminum with a powder-coat finish; outdoor accessories need stainless steel or specifically-rated coastal-grade finishes for salt-air resistance. UV exposure degrades plastic over years; choose UV-stabilized polymers or metal for sun-exposed installs. Plan for replacement at year 7-10 on outdoor plastic accessories.

Mounting load capacity must exceed device weight by a healthy margin. Camera weight, housing weight, and any wind loading on PTZs combine. Wall, ceiling, and pole mounts each have rated maximum loads — check before specifying. Pole-mount and pendant-mount installations need conduit, junction boxes, and weather-sealing that aren't always specified in the camera kit.

Wire management and accessibility for service get overlooked in early planning. Bottom-loaded cable entry in housings, swing-out mounting plates, and accessible junction boxes save hours when a camera needs service. Cheap mounts that require complete dismount to access cables drive labor cost up at every service call. Specify service-friendly mounting hardware on installs you expect to service for 10+ years.

Key Specs in This Category

SpecAvailable Options
IP RatingIP66
Power24VDC, AC/DC, PoE+, PoE, 12VDC, 24VAC, 48VDC
Channels128
TypeRelay Module, Power Supply, Network Sound Projector, I/O Box

Top Brands in This Category

Frequently Asked Questions

Will this mount work with my camera?

Mounts are camera-specific in most cases. The product description and manufacturer's compatibility list are the authoritative source. If you're not certain, send the camera model and the mount part number to our Senior Specialists; we'll confirm compatibility before you order. Returning a mismatched mount after installation labor is significantly more expensive than checking up front.

Do I need a junction box?

For most outdoor and exposed-conduit camera installs, yes — junction boxes house cable terminations and protect splices from weather. The camera's mounting requirements often specify the junction-box size and material. Some camera-and-mount combinations integrate the junction box into the mount; others require a separate box. Confirm before ordering to avoid pulling cable into an installation that can't accept it.

What's the difference between a wall mount and a pendant mount?

Wall mounts attach to vertical surfaces and project the camera outward. Pendant mounts attach to ceilings or overhead structures and suspend the camera below. Pole mounts are a specialized wall mount for poles. Choose by the mounting surface available and the field-of-view orientation required; many cameras work in any mount with the right adapter.

Are stainless steel mounts worth the extra cost?

For outdoor coastal installs (within ~5 miles of saltwater), yes — galvanized steel rusts visibly within 2-3 years in coastal air. For inland outdoor, marine-grade is overkill; powder-coated galvanized lasts 10+ years. For corrosive industrial environments (chemical plants, wastewater), stainless steel or specifically-rated coatings extend service life dramatically. Match the material to the environment, not the budget pressure.

Can I use one brand's mount with another brand's camera?

Sometimes — many mounts accept standard mounting patterns (¼-20 thread, M6 pattern, VESA spacing) and cross brands. Manufacturer-specific cast housings rarely do. Check the mount's hole pattern and weight rating against the camera's specs. When in doubt, use the camera manufacturer's recommended mount; cross-brand savings on mounts are typically small and the warranty implications of mismatched hardware aren't worth the risk.

Need help choosing? Talk to a Senior Specialist — direct line 877-277-7147 or request a quote.