The builtin intelligent receiving/sending discrimination circuit does not require frontend equipment to provide receiving/sending switching control signals.The module works in the receiving state by default and amplifies the received signal. When the frontend equipment is detected to transmit external signals, it will instantly switch to the transmitting and amplifying state.The transmission gain is manually adjustable, which is convenient for compatible wireless devices with different transmission powers.The receiving/sending link has a high degree of isolation, and the receiving link can withstand strong external interference without causing selfexcitation of the loop.Compatible with various modulation methods such as LORA and FSK/ASK/OOK/MSK/GFSK.Description:ABIOT510 series twoway signal amplification modules are designed for various applications in the 510M (470MHz520MHz) frequency bands. Its compact size and convenient use make it easier to design products for highpower and longdistance applications in this frequency band.(Note: Handheld walkietalkies cannot use this module to achieve the purpose of extending the transmission range due to their high transmission power.)Parameter:Working frequency band: 470MHz520MHz Receiving gain: 11dB2dBReceiving noise figure: less than equal 2.0dBTransmission gain: 5dB11dB (2dB) adjustableRecognition threshold for receiving and sending switching: 2dBmInput power range: 1dBm25dBmWork status LED indication:Receiving status: green light is on, blue light is offTransmitting status: blue light is on, green light is offIn TDD working mode, the blue light and green light will flash alternatelyColour:As ShownMaterial:plastic+metalPackage Contents:1 * patch ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.