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Communication Antennas
  • Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna
  • Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna
  • Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna
  • Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna
  • Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna
  • Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna
Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna
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Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna

  • 2 - 9999 Pieces
    $0.06
  • >= 10000 Pieces
    $0.05
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Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Multi-Frequency Compatibility: Supports 433MHz, 868MHz, and 915MHz frequencies, enabling seamless communication across global IoT, M2M, and wireless sensor networks.
  • Helical Design Efficiency: A coiled spring-like structure (brass/copper material) optimizes vertical polarization for directional signal transmission and energy storage, ensuring stable performance in diverse environments.

Key features

  • 1. Superior Material Technology

    • With copper and brass construction, achieve superior conductivity and durability compared to aluminum-based antennas*, enabling reliable performance in harsh environments.

  • 2. Enhanced Signal Performance

    • With a 3dBi gain, boost signal strength for clearer communication over longer distances compared to lower-gain antennas*. Ideal for extending range in IoT and wireless sensor networks.

  • 3. Multi-Frequency Versatility

    • With multi-frequency support (433/868/915MHz), adapt to diverse applications like IoT, RFID, and industrial sensors for both home and commercial use*.

  • 4. Directional Helical Design

    • With a helical design, focus signals directionally to enhance performance in point-to-point communication compared to omnidirectional antennas*. Optimized for precision in applications like remote controls and wireless gateways.

  • 5. Regulatory Compliance Readiness

    • With compliance to FCC/CE standards*, ensure regulatory readiness for global deployments in commercial and industrial settings.

Product details

Free Sample Internal spring antenna 433Mhz 915Mhz OEM 3dbI 868Mhz helical antenna

The Free Sample Internal Spring Antenna is a versatile helical antenna designed for 433MHz, 868MHz, and 915MHz frequencies. Crafted from durable copper and brass, it offers vertical polarization and 3dBi gain, ensuring reliable signal transmission in compact spaces. Its spring-like helical structure optimizes energy storage and mechanical resilience, making it ideal for OEM applications in IoT devices, industrial sensors, and communication systems.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialCopper/BrassWithstands corrosion in harsh outdoor environments
Frequency Range433MHz, 868MHz, 915MHzSupports global IoT and industrial communication standards
Gain3dBiEnsures stable signal strength in confined spaces
PolarizationVerticalReduces interference in vertical-aligned systems
TypeHelical AntennaEfficient energy storage for repeated compression/tension cycles

Customization guide

Adjustable parameters:

  • Frequency tuning: Customize resonant frequencies to match specific regulatory or application requirements.
  • Helix geometry: Modify coil pitch/diameter for optimal performance in high-density or low-profile designs.
  • Material blend: Opt for pure copper (lightweight) or brass (corrosion-resistant) based on environmental needs.

Get inspired

The helical design of this antenna combines mechanical durability with precise signal performance. Ideal for smart home devices, industrial sensors, or automotive systems, its compact form factor and vertical polarization ensure seamless integration without compromising functionality.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Frequency Range433/868/915MHz+20% bandwidth+40% bandwidth*
Gain3dBi5dBi7dBi
MaterialCopperBrassCopper-Brass alloy
DurabilityStandardCorrosion-resistantMilitary-grade

*Expanded bandwidth enables simultaneous multi-frequency operation.

Supplier's note

  1. Three Technical Breakthroughs:

    • Helical Geometry: The optimized coil pitch maximizes 915MHz performance (+20% efficiency vs. flat antennas).
    • Material Fusion: The Pro Model’s copper-brass alloy reduces signal loss by 15% in high-temperature environments.
    • Vertical Polarization: Minimizes cross-talk interference in densely packed sensor networks.

  2. Optimal Version Selection:

    • Base Model: Ideal for low-cost IoT devices (e.g., smart thermostats) requiring basic frequency coverage.
    • Advanced Model: Suitable for industrial IoT (e.g., warehouse sensors) needing corrosion resistance and wider bandwidth.
    • Pro Model: Best for mission-critical systems (e.g., automotive telematics) demanding extreme durability and high gain.

With vertical polarization, you can ensure stable signal transmission in vertical-aligned systems. The Pro Model’s military-grade durability outperforms industry benchmarks by 30%, enabling safe use in extreme environments. Pair its high gain with compact dimensions to maximize performance in space-constrained devices.

Frequently asked questions

  • Which helical antenna model suits IoT devices operating at 868MHz or 915MHz?

  • How do I maintain a brass helical antenna to prevent corrosion?

  • What’s the difference between copper and brass helical antennas?

  • Can this helical antenna be customized for vertical polarization needs?

  • Is the 3dBi gain sufficient for long-range wireless communication?

  • Are these helical antennas FCC/CE certified for commercial use?

  • How does the helical design improve antenna performance?

  • Can I request a free sample for prototype testing?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Frequency RangeIoT Devices, Smart Sensors, Industrial AutomationTriple-band operation (433/868/915 MHz)
(Meets FCC/ETSI global standards)		Broad compatibility across regions and devices (e.g., LoRaWAN, RFID systems)Higher cost due to multi-band design complexity
GainLong-Range Communication, Remote Monitoring3 dBi (Base) ▲ 5 dBi (Advanced)
(ISO/IEC 61158 compliance)		Enhanced signal strength for Base; Advanced version boosts range by 30%Lower gain versions may not support Advanced’s extended range
Material CompositionHarsh Environments (e.g., Oil Rigs, Marine)Copper/brass construction
(ASTM B280 corrosion resistance standard)		Durable in corrosive or humid conditionsHeavier than plastic alternatives, increasing installation complexity
PolarizationVertical Signal Alignment (e.g., Towers, Poles)Vertical polarization
(Optimized for vertical signal alignment)		Efficient energy transfer for vertically oriented devicesIneffective for horizontal polarization requirements (e.g., ground sensors)
Antenna TypeDirectional Transmission (e.g., Point-to-Point Links)Helical antenna design
(Enhanced directional radiation pattern)		Superior focus for long-distance, line-of-sight communicationBulky compared to dipole antennas; requires precise alignment
Environmental ResistanceOutdoor Installations (e.g., Weather Stations)Corrosion-resistant brass
(Passes ASTM B117 salt spray test for 1000 hours)		Reliable performance in marine or industrial settingsRequires occasional cleaning to maintain surface integrity

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