Eve builds smart home devices that focus on a single, reliable ecosystem: Apple Home. The Water Guard is a straightforward leak detector designed for that environment. It uses Thread for a robust, low-power connection and works entirely within the Home app, which is a significant advantage if you’re already invested in that platform.

The 6.5-foot sensing cable lets you snake it behind appliances like washing machines or water heaters, covering a much larger area than a simple puck-style detector. When it senses moisture, a piercing 100dB siren and a bright red light activate immediately. You’ll also get an instant notification on your iPhone or iPad, giving you a chance to act before a trickle becomes a flood. The range is solid, with Thread supporting a reliable connection up to about 150 meters from a Home hub.

Setup is simple if you’re in the Apple ecosystem. Just plug it into a standard outlet, open the Home app, and tap add accessory. The main limitation is clear: this is exclusively for Apple HomeKit users. It won’t work with Alexa or Google Home. For those all-in on Apple, however, it’s a focused and effective piece of preventative insurance.