Dear Gordon, only one non-N-Com system can be paired up and connected to the B902 system. For further request, contact us using the e-mail address on the www.n-com.it website, SUPPORT section.
Dear Nattawut, you can easily adjust the volume by tapping the arrows key. You will hear a beep when the volume reaches the maximum or minimum level. Some volume parameters can be adjusted through the N-Com EASYSET APP for smartphone or the N-Com EASYSET computer program. N.B.: The volume level set during the trip is not stored when the system is turned off. Each time the N-Com system is switched on, the audio goes back to the set default volume level.
