Bluetake Technology BT400G22003520 User Manual

Turn On

Two high tones

Turn Off

Two low tones

Pairing mode

Two high tones

Incoming call

A ring tone at 2 seconds interval

Mute

Repeated two low beeps at a 3 seconds inter-
val

Unmute

A single beep

Battery low

Starts when the talk time is left about 3~5
minutes. At a 16 seconds interval.