These stopwatches are water resistant.

Keep your phone in your pocket and your hands free—these smartwatches perform a variety of functions on your wrist. They connect to Apple and Android phones via Bluetooth, informing you when calls, texts, and other notifications arrive. Designed for harsh environments and rugged use, they meet military standards for resistance to hot and cold temperatures, shock, splashes, and submersion in up to 100 meters of water. These watches have a compass and GPS for tasks such as navigation, tracking and saving location coordinates, and calculating the area of a location by walking the perimeter. With weather and elevation monitoring, you can set the rate of barometric pressure change that will trigger a storm alert. These watches track health and fitness metrics over time, including heartrate, blood oxygen levels, and exercise. They have a solar battery in addition to a rechargeable lithium-ion one to extend the time between plug-in charging.

Use these switches in place of standard wall switches to automatically turn electrical equipment on or off after a set interval of time. They’re often used with lights.

Switches with override can bypass the automatic shut-off.

Set switches with beep and light signals to alert when the timer is almost done; the signals can also be turned off.

Switches with set time recall retain the last setting; hold the button down to restart the timer with that setting.

Control equipment with high currents such as air conditioners, heaters, and ventilating equipment. They automatically turn electrical equipment on or off after a set interval of time.

Switches with override can bypass the automatic shut-off.

Control two devices and delay the shut off of one device by up to one hour. These switches are often used with lights and fans for ventilation. All have an override that bypasses the automatic shut-off.

Automatically turn electrical equipment off after a set interval of time. Use the three-prong outlet to plug a device directly into the switch.

The large face makes these switches easy to read from a distance. They automatically turn electrical equipment on or off after a set interval of time. All have two three-prong outlets to control up to two devices at once; plug each device directly into the switch. A rocker switch controls the outlet settings. The buzzer sounds when the timer stops.

Switches with a white face can be set so that both outlets turn off when the timer stops, or so that the top outlet turns off and the bottom outlet turns on.

Switches with a black face can be set so that both outlets turn on when the timer stops, or so that the top outlet remains off and the bottom outlet remains on.

Install these switches in a panel cutout to automatically turn electrical equipment on or off after a set interval.

Switches with set time recall retain the last setting; push the button to start the timer over at the same interval, eliminating the need to reset the dial with every use.

Push and release the button to activate—no electricity required.

Attach these timers to faucets to make sure you’re following handwashing protocols that help prevent the spread of illness. Most health organizations recommend washing your hands for at least 20 seconds to eliminate germs. These timers have a 30-second countdown, which is enough time to pump soap, wash for 20 seconds, and rinse your hands. An easy-to-read LCD display shows you the amount of time you have left. They also beep to alert you when the countdown is done, so you don’t have to watch the timer.

These timers are touch-free—a sensor triggers the countdown as soon as water starts flowing, and they automatically reset after 30 seconds. The countdown continues even if the flow of water stops, so you can install them on both manual and touch-free sinks. Connect timers directly to a male-threaded faucet, or use the male adapter to connect to a female-threaded faucet. They include a wrench, so you don’t need tools on hand to install them.

Made from impact-resistant ABS, these timers hold up to bumps and scrapes from regular use. The chrome finish blends in with silver faucets. An aerator at the base of the timer prevents splashes and helps create a smooth flow of water. They also have a rubber gasket to keep water from leaking through the faucet connection.