Dog training collar

Electronic dog training collar 1.levels of vibrations and whistle. 2. Range: 100m. 3. Receiver: 2 x 1.5V, AAA batteries. 4. Transmitter: 1 x 12V, 23A battery. 5. Ideal for call or training pets. 6. Use vibration instead of static stimulation. 7. CE/RoHS/R&TTE approved. The remote controller and receiver of the machine apply automatic matching technology, and the receiver will make sound when the batteries are installed in the receiver, then press any key of the remote controller and the receiver will make continuous sound, which shows it has successfully received the signal from the remote controller, and the remote controller may work normally.If the receiver doesnt make sound when installing batteries, please remove the batteries, and then install again 10 seconds later.