Ring Complete System Bundle Base Station Keypad Contact Sensor Motion Detector Range Extender Extra Contact, Motion Sensor The item with model number 4K11S7-0EN0 refers to the Ring Alarm Home Security Kit (1st Gen). It?s not a jewelry ring, but rather a smart home security system developed by Ring, a company known for its video doorbells and security products. Product Overview Name: Ring Alarm Home Security Kit (1st Gen) Model: 4K11S7-0EN0 Includes: Base station, keypad, contact sensor, motion detector, and range extender Connectivity: Wi-Fi and Z-Wave Power Source: Battery-powered Dimensions: 9 x 7 x 6 inches Features: Mobile alerts via the Ring app Easy DIY installation Optional professional monitoring with Ring Protect Plus 24-hour backup battery and 110 dB siren All of these components are from the brand Ring and are designed for a comprehensive home surveillance system. The Wi-Fi connectivity, night vision capabilities, and motion/PIR activation features make it easy to monitor both indoors and outdoors. With smart home compatibility with Amazon Alexa and Bluetooth connectivity, this bundle offers a seamless and convenient way to enhance your home security setup. The rechargeable batteries and solar power source ensure that your system is always powered and ready to detect any potential threats.