Segue abaixo o Link dos intercomunicadores que eu recomendo :
Lexin GTX: https://s.click.aliexpress.com/e/_DlBmkQB
Lexin G2: https://s.click.aliexpress.com/e/_DB6VirZ
Lexin B4FM X: https://s.click.aliexpress.com/e/_DlkEPXN
Fodsports V6S: https://s.click.aliexpress.com/e/_DEDJ059