This 433MHz Antenna for wireless was a kind of customized product. It was firstly designed forTPMS (Tire Pressure Monitoring System) and Car Reversing display equipments with our patent material--Organic Polymer Magnetic Material. This material can be mostly minimized antenna's size and weight and strengthen its performance at the same time, as a result of its compact wave feature. Providing all kinds of antenna solutions and R&D all wireless communication terminal antennas for our customersare our advantages and responsibilities. Please be free to contact us if have antenna problems.Product Description Part No.: KY-433W-S Size: Φ9×34mm Connecter type: SMA Center Frequency: 433MHz Band Width: 12MHz V.S.W.R: <1.5 Gain: 1.0dBi Impedance: 50 Ohm Polarization: Linear operating Temperature: -40 80