FLITTOR Dog Training Collar Receiver Rechargeable Shock Collar Receiver Waterproof Training Collar

Sync transmitter with collar-receiver: 1. Power on the remote transmitter by pressing and hold the POWER button on the transmitter. 2. Select channel A, B or A+B. 3. Power on the Receiver Collar by press the ON/OFF button on collar, a beep will sound. 4. Press ON/OFF button afresh and hold it for 5 seconds, and then the LED light will start to flash green quickly for 10 seconds. 5. Now you can hear the first beep from the collar-receiver and then press any of the command button(tone,shock or vibration) of the transmitter before the green light on the receiver stop flashing quickly. 6. You will hear the second beep from the receiver, which signifies that the transmitter and the receiver have been synced. 7. To sync the transmitter and the second receiver, repeat step 2 through 6. 8. Please be sure to choose the other channel. NB: According to the factory default settings, when the collar-receiver has been turned on the syncing should be completed within 10 seconds, thereby you have to press the COMMAND BUTTON in good time or press it at least within 10 seconds. Please DO NOT try to sync the transmitter with the two collar-receivers (if any) at the same time.