The Lockly Secure Link Wi-Fi Hub & Door Sensor Kit PGH200 is a contemporary-style door lock system that offers remote control of Lockly door locks and app compatibility. The white rectangular hub made of plastic includes instructions and comes with fixings supplied for easy installation. With smart home compatibility with Google Assistant and Amazon Alexa, this kit is suitable for universal/reversible door use and operates on the Wi-Fi smart home protocol. It is a convenient and secure option for home improvement projects related to doors and door hardware.