1. Upgrade Bark Control Device with Say goodbye to constant barking with our latest anti barking device, now featuring a convenient remote control. This upgrade allows you to manually activate the device when a dog barks outside of the 33ft detection range. Just press and hold the remote's button for 2 seconds to activate it for 8 seconds, and then it will to standby mode. 2. Adjustable Ultrasonic Frequencies Tailor the device to your dog's needs with 4 adjustable levels: Mode I Ultrasonic Low (15kHz)/High (20kHz); Mode II Ultrasonic Low (25kHz)/ High (30kHz). This device works for most dog breeds and sizes, but not for deaf or hearing impaired dogs. Keep in mind that some dogs may initially be fearful or resistant to the ultrasonic sound, so patience is key. 3. Safe for Humans, Effective for Dogs The ultrasonic sound emitted by the device is inaudible to humans, ensuring no interference with your daily activities. However, dogs are sensitive to these frequencies and will respond accordingly. Adjust the frequency through the remote control to find the most effective setting for your dog. For dogs with hearing loss or aggressive behavior, the device might not work as well. 4. Long lasting and Built with a 2000mAh rechargeable battery, this device needs just 4 hours to fully charge and can work for up to 30 days on a single charge, with a standby time of 60 days. The IPX4 waterproof rating ensures that it works perfectly both indoors and outdoors ideal for keeping your own dog or your neighbor's dog from barking, even in bad weather.