BOYA by-W4 Wireless Lavalier Lapel Microphones - 7H Battery Life

Step 1: Turn on the Four Transmitters, you'll notice that the indicator lights on the four transmitters will begin to blink, indicating they are ready to pair with the receivers.Step 2: Turn on the Receiver, You will see that as soon as the receiver is activated, it will automatically seek and connect to the four transmitters.Step 3: Successful PairingOnce you've completed the above steps, you'll notice that the indicator lights will remain steadily lit