how to change mode for hunting dog beeper BK3518 tina@kinghunting cn

hunting dog beeper collar BK3518 have two kinds modes, and each mode also has 5 modes. when keep key to switch, BIB twice is on; one BIB is mode 1; 2 BIB sound is mode 2; 3 BIB sound is mode 3......; when you find the mode you want, please leave the key from switch. Will be the default mode when the beeper working next time. any question, please send email to tina@kinghunting.cn whatsapp:+8615889417405