Modular safety device with dog deterrent and panic alarm

摘要

A modular safety device has an ultrasonic device capable of transmitting ultrasonic sound with a frequency of at least 20 kHz. The ultrasonic sound is inaudible to human ear and can cause barking or approaching dogs to stay in place, stop or move away from the user. The modular safety device also includes a power supply and an audible alarm device. The audible alarm device is capable of issuing a distress sound audible to human ear. The power supply, ultrasonic device and audible alarm device are incorporated into a detachable and portable unit that can be easily carried on a user's person or attached to a user's mobile device such as walker or wheelchair.