Support 10 sets at max for Simultaneously Using (Each Set Using In Different Channel).
Notice: If Microphone & Receiver cant connect with each other, they need Pairing to Reset, please see how to Pair/Reset in User Manual.
Advanced connection and after sales: If your microphone has no sound, make sure you have enough power for the microphone and receiver. Insert the MIC jack, Not an AUX jack. If you find no sound from the mic, you need to re-pair.