Here is the grammatically corrected and professionally polished version, with the original specifications and meaning preserved:
Efficient Anti-Barking Device: This ultrasonic anti-barking device provides 3 adjustable frequency levels, including 10–16 kHz for small dogs, 20 kHz for docile dogs, and 25 kHz for large and naughty dogs. With 4 built-in speakers and a sensing distance of up to 32.8 ft, the device can effectively help discourage excessive barking.
Easy to Use: This rechargeable dog barking control device is easy to operate. The blue indicator light flashes when the device is powered on and blinks every 6 seconds in standby mode. The red indicator light stays on for 3 seconds when barking is detected and starts flashing when the battery is low. During charging, the indicator light remains red and changes to blue when the device is fully charged.
Safe for Humans & Pets: Free of poisons and chemicals, this sonic bark deterrent emits ultrasonic sounds designed to be heard by dogs while generally remaining inaudible to humans. It is designed to discourage barking without harming your pet.
Long-Lasting Battery: With a charging time of approximately 5 hours, the dog bark control device can remain on standby for up to 30 days, depending on the frequency of barking. The device comes with a Type-C USB cable and can be charged using a wall charger, laptop, power bank, or other compatible USB power source.
IP45 Waterproof: Featuring IP45 waterproof performance, this bark controller can be mounted on a garden fence, near a dog house, on a tree, or in other suitable outdoor locations.
Different dogs may be sensitive to ultrasound at different frequency ranges. Please adjust the slide switch to test different frequency levels and find the most suitable setting for your dog.
In situations involving multiple dogs, when one dog begins barking and triggers the device's ultrasonic response, the emitted sound is intended to discourage barking among all dogs. However, dogs can influence each other's behavior. An innocent dog unexpectedly exposed to the ultrasonic stimulus may become distressed and begin barking, potentially causing other dogs to react and creating a chain reaction of barking.
Recommended for dogs with normal hearing.
Please mount the anti-barking device at a height of 1.65–1.97 ft.
Product Type: Ultrasonic Anti-Barking Device
Color: Black
Material: ABS
Built-in Battery: 1 × 3.7 V 1500 mAh battery (Battery is not for individual sale)
Input: 3.7 V, ≤2 A
Charging Time: Approximately 5 hours
Standby Time: Approximately 30 days
Waterproof Level: IP45
Ultrasonic Frequency Levels: 3
Sensing Distance: ≤10 m / 32.8 ft
Suggested Dog Weight: Less than 50 lbs
Suggested Dog Age: 6 months–8 years
Suggested Mounting Height: 1.65–1.97 ft
Charging Cable Length: 82 cm / 32.28 in
Item Size: 8.3 × 11 × 3.7 cm / 3.27 × 4.33 × 1.46 in
Item Weight: 160 g / 0.35 lbs
1 × Ultrasonic Anti-Barking Device
1 × Type-C USB Cable
2 × Mounting Screws
2 × Plastic Anchors
1 × User Manual