Panasonic WX-SR202P Mode D'emploi page 18

Parts and their names
⑭ Pairing button
This button controls the pairing between microphones and each channel on the receiver.
⿟ Pairing:
⿟ Pairing confirmation: Shortly press the [REG] button to enter pairing confirmation
⑮ Pairing indicator [REG]
Shows the current operation mode (pairing, pairing confirmation) of the channel.
Off:
Blinking (orange):
On (green) (1 second):
Alternately blinking (orange/green) : Pairing confirmation
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Keep the [REG] button pressed for more than two seconds to
enter pairing mode. (page 44) Exit pairing mode by shortly
pressing the [REG] button once while in pairing mode.
A channel cannot enter pairing mode when the microphones
paired to that channel are currently active.
mode. (page 51) Exit pairing confirmation mode by shortly
pressing the [REG] button once more.
Standard mode
Pairing mode
Pairing successful