The TP-Link Tapo T300 is a smart water leak sensor designed to protect your home from unexpected flooding. It features six high-sensitivity probes located on both the top and bottom, allowing it to detect leaks regardless of how you place it. To alert you immediately, the device includes a built-in siren that reaches 90 dB, though this volume can be adjusted to suit your needs. Built with an IP67 rating, the sensor is fully waterproof and dustproof, making it reliable for placement in damp areas like basements or under sinks. It connects wirelessly via 868 / 922 MHz frequencies and requires a Tapo Hub to send notifications to your phone or trigger other hub-based alarms. The compact white housing measures 84.5 x 46.5 x 30 mm and can be installed using the included magnets, adhesives, or lanyard. Power is provided by two AAA batteries, which are included in the box. Depending on your setup, these will last over two years when the sensor works independently or up to 1.5 years when coordinating with a hub. This makes it a practical choice for homeowners who want a low-maintenance way to monitor plumbing and appliances without constant battery changes.