Features 1、Application: The built‑in spring antenna is suitable for various 433MHz/470MHZ wireless modules and intelligent remote control equipment. 2、IPEX Connector: The interface is specially designed as IPEX type, which is not easy to age, and makes the signal more sensitive at the same time. 3、Stable Signal: The standing wave ratio of 3DBi built‑in antenna is lower than 1.5, and the signal is stable, bringing you more convenience. 4、Excellent Performance: RG1.13 wire high density braided shielding layer, oxygen‑free core, high conductivity and low loss. 5、Professional Production: Have undergone extensive quality and safety testing to ensure long service life and strong durability. Specification Item Type: 3DBi Built‑in Antenna Material: Pure Copper + RG1.13 Wire Purpose: Signal stabilization and gain Frequency Band: 433-470MHZ Gain: 3dbi Standing Wave Ratio: <1.5 Impedance: 50Ω Polarization Method: Linear Polarization Interface Form: IPEX Interface Power: 50W Working Temperature: -40℃ to +65℃ Application: For various 433MHz/470MHZ wireless modules and intelligent remote control equipment. Package List 10 x 3DBi Built‑in Antenna