Samsung SmartThings Water Leak Sensor: Stay informed of water leaks wherever you go with this sensor, which pairs with your existing SmartThings hub and your Apple® iOS, Android or Windows device. Just place the sensor next to your sump pump to receive mobile alerts if there's any excess water. The sensor also triggers a light or siren.

Samsung - SmartThings Water Leak Sensor - White

$39.99

Detect high carbon monoxide levels with this Kidde Nighthawk alarm. It monitors the levels in your home every 15 seconds and displays the most recent peak level to keep your loved ones safe. The test/reset buttons of this Kidde Nighthawk alarm let you make sure it is still working, and its 9-volt backup battery ensures functioning during power outages.

Kidde - Nighthawk Carbon Monoxide Alarm with Digital Display

$39.99

Protect your home from water damage with the white Honeywell Lyric smart leak detector. This Bluetooth enabled device mounts onto any wall or floor near a water source, and the removable cable sensor detects leaks and low temperatures. Install the Lyric smart leak detector app on your smartphone to receive notifications when water or freezing temperatures are detected.

Honeywell - Lyric Wi-Fi Water Leak and Freeze Detector

$79.99

Protect your family with this Nighthawk plug-in carbon monoxide and explosive gas alarm. The digital display shows the current level of CO, providing constant peace of mind, and the loud 85-decibel alarm gets everyone's attention. This Nighthawk plug-in carbon monoxide and explosive gas alarm includes a battery backup, so it works during a power outage.

Kidde - Carbon Monoxide and Explosive Gas Alarm with Digital Display

$49.99