ITEM NAME:2pcs 433Mhz GSM GPRS WiFi SMA Male Gain Antenna Wireless Module BX Features: High quality glue rod antenna reduces signal attenuation, strong anti-interference, small frequency deviation and high signal quality. Factory direct selling, super high quality. The full copper spring is used in the antenna, and the performance is better. Antenna length: 5cm Frequency: 433MHz Gain: 2.5dBi Polarization: vertical Bobbi: less than 1.6 (SMA) Type of connector: Standard SMA straight head (inner screw hole) Nominal impedance: 50 Omega Maximum power: 50W Working temperature: -40 C - +85 C Package include: 2pcs* Gain Antenna.Frequency: 433MHz. Bobbi: less than 1.6 (SMA). Type of connector: Standard SMA straight head (inner screw hole). 2pcs Gain Antenna. High quality glue rod antenna reduces signal attenuation, strong anti-interference, small frequency deviation and high signal quality.