Retevis RT97S Customizable Repeater, RT97 Upgraded Version, Radio Repeater, Full Duplex Analog Repeater, Compatible with Raspberry Pi, High Power, for Remote Area, Emergency Rescue(1 Pack)

Features

• RT97S vs RT97; RT97S has a DB-9 female connector; which can be directly connected to the microphone and is compatible with Raspberry Pi; enabling multiple RT97S repeaters to be interconnected to extend the communication distance (additional components are not included in the package)
• Customizable frequency; achieve an out-of-the-box long-distance solution and no longer worry about compatibility; if you need to customize the frequency; please contact us via Amazon email
• Channel switching; long press the button for three seconds to switch channels; if you need to adjust the volume; try to press the button briefly
• Expand the calling distance; RT97S base station is used with walkie-talkie to achieve remote calling; suitable for a wide range of farms, camps, warehouses and other environments
• Built-in duplexer; can receive and transmit signals at the same time; only needs one antenna to transmit walkie-talkie signals; the package does not include the antenna; need to pay attention to some power losses caused by the duplexer