USB type-C, commonly referred to as USB-C, is a 24-pin reversible connector designed to transmit data, video, audio, and power. It supersedes previous USB connectors, offering a versatile and universal interface for connecting various devices such as monitors, external drives, hubs, docking stations, mobile phones, and more. USB-C supports multiple protocols, including Thunderbolt, Peripheral Component Interconnect Express (PCIe), High-Definition Multimedia Interface (HDMI), and DisplayPort, and can deliver power up to several hundred watts through USB Power Delivery. Its reversible design allows for easy connection without worrying about plug orientation.

Transcranial doppler is a non-invasive diagnostic procedure that monitors and assesses the blood flow through the brain blood vessels by recording ultrasound waves moving through the cranium.

A transparent quartz tube is a cylindrical tube made from high-purity quartz glass, known for its excellent optical clarity, high thermal resistance, and chemical stability, commonly used in applications requiring high transparency and durability.

Underwater cameras can capture images and videos underwater up to certain depths. These cameras are majorly used by water sports enthusiasts for capturing their movements while snorkeling, scuba diving, rafting, swimming, and performing other underwater sports.

A sonobuoy is a small, expendable sonar system used primarily by naval forces to detect underwater objects such as submarines. Deployed from aircraft or ships, it floats on the ocean surface while its sensors descend underwater to transmit acoustic data back to operators via radio signals. Sonobuoys are essential tools in anti-submarine warfare (ASW), enabling real-time tracking and surveillance of underwater threats. They come in various types, including passive (listening only) and active (sending and receiving sound pulses), and are designed for short-term use in tactical operations.

Social robots are autonomous robots designed to interact and communicate with humans in a socially acceptable manner. They are equipped with advanced sensors, artificial intelligence, and communication capabilities to understand and respond to human emotions, speech, and actions. These robots are often used in various settings, such as healthcare, education, customer service, and companionship, to assist, entertain, and engage with people.

Smart plugs transform ordinary appliances into smart appliances. They are cost-effective alternatives for smart appliances. Technology is expected to have a high penetration among Millennials. The use of and dependence on devices that can be controlled remotely through a wireless connection is increasing globally, which is a key factor that is driving the growth of the global smart plug market. The need for connectivity is increasing, especially because it allows consumers to control different types of devices and perform tasks remotely. Smart appliances depend on wireless technologies like ZigBee, Wi-Fi, Z-Wave, Bluetooth, and NFC, as well as the Internet of Things (IoT) and operating systems (OS) like iOS, Android, Azure, and Tizen for command and control by end-users.

A smart home camera is a stand-alone camera that connects to the Internet and can record and simultaneously stream video through the Internet Protocol (IP) network that can be accessed remotely by using smart gadgets such as smartphones and tablets, and PCs (Desktops) and Laptops. The video can be saved to a memory card (if any) installed in the camera device and other digital devices (PCs, laptops, smartphones, and tablets).

Smart home appliances are devices that are equipped with advanced technologies to connect to a network, often through Wi-Fi or Bluetooth, allowing remote control, automation, and enhanced functionality. These appliances often integrate with platforms like smartphones, tablets, or voice assistants to perform tasks efficiently and provide convenience, energy savings, or improved security.

Smart doorbells are defined as Internet-connected doorbells that notify homeowners when a guest arrives at the door. Users can view the person at the door from a smartphone or tablet. The smart doorbell is activated when the guest presses the doorbell. The user is informed of the presence of the guest through in-built motion sensors. Users can receive constant alerts about actionable security risks or other key events. Smart doorbells support the feature of two-way audio communication with visitors via wireless communication technologies such as Bluetooth, Wi-Fi, and Zigbee networks.