Countdown Timers | McMaster-Carr

	Timing Functions Timing Functions

	Power Source Power Source

Battery

Spring Wound

Solar

	Maximum Timer Duration Maximum Timer Duration

	Resolution Resolution

1 sec.

1 min.

1/100 sec.

	Set Time Set Time

	Number of Displays Number of Displays

	Battery Size Battery Size

AAA

1.5V

CR2032

	Maximum Number of Events Maximum Number of Events

	Switching Voltage Switching Voltage

	Timing Adjustment Style Timing Adjustment Style


Knob	Push Button

Trippers

	Height Height

	Maximum Alarm Duration Maximum Alarm Duration

	Case Color Case Color

	White		Gray
	Red		Black
	Silver

	Switching Current Switching Current

	Diameter Diameter

	Width Width

	Depth Depth

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Number of Circuits Controlled Number of Circuits Controlled

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Timing Cycle Timing Cycle

24 Hour

7 Day

365 Day

	Minimum Set Time Minimum Set Time

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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137 Products

Timing

Timers

Count down to zero or count up to as much as 24 hours with these digital timers.

Analog Timers

These traditional dial timers count down to zero or count up to 60 minutes.

Stopwatches

Quickly view starts and finishes on a digital screen.

Timer Switches

Wall-Mount Timer Switches

Use these switches in place of standard wall switches to automatically turn electrical equipment on or off after a set interval of time.

High-Current Wall-Mount Timer Switches

Control equipment with high currents such as air conditioners, heaters, and ventilation fans.

Time-Delay Wall-Mount Timer Switches

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.

Panel-Mount Timer Switches

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

Power-Saving Panel-Mount Timer Switches

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

High-Visibility Timer Switches

The large face makes these switches easy to read from a distance.

Timer Switches

Automatically turn electrical equipment on or off after a set interval.

Time and Day Activated Switches

Outlet-Box-Mount Time and Day Activated Switches

Switches fit single device (1 gang) outlet boxes.

Time and Day Activated Switches

Program these switches to turn a device on and off at a set time and day.

Outdoor Time and Day Activated Switches

Designed to work with landscape and security lighting.

Surface/DIN-Rail Mount Time
and Day Activated Switches

Mount these switches to a flat surface or attach to DIN rail.

Panel-Mount Time and Day Activated Switches

Install these switches in a panel cutout.

Surface/DIN-Rail Mount Set-to-the-Minute
Time and Day Activated Switches

Mount these switches to a flat surface or attach to DIN rail.

Panel-Mount Set-to-the-Minute
Time and Day Activated Switches

Install these switches in a panel cutout.

Set-to-the-Minute High-Current
Time and Day Activated Switches

For precise control of high-current equipment such as landscape lighting, pumps, and heaters, these switches schedule on/off times to the exact minute.

Outdoor Set-to-the-Minute High-Current
Time and Day Activated Switches

Rated NEMA 3R, these rain-tight switches protect against falling liquids and light splashing.

Outdoor High-Current Time and Day Activated Switches

Rated NEMA 3R, these rain-tight switches protect against falling liquids and light splashing.

High-Current Time and Day Activated Switches

Control equipment with high currents, such as landscape lighting, pumps, and heaters.

Faucet Timers for Handwashing

Attach these timers to faucets to make sure you’re following handwashing protocols that help prevent the spread of illness.

Combination Wristwatch/Weather Monitors

Monitor your environment when working outdoors. These wristwatches display time, date, temperature, barometric pressure, and altitude.

Timing

Timers

Analog Timers

Stopwatches

Timer Switches

Wall-Mount Timer Switches

High-Current Wall-Mount Timer Switches

Time-Delay Wall-Mount Timer Switches

Panel-Mount Timer Switches

Power-Saving Panel-Mount Timer Switches

High-Visibility Timer Switches

Timer Switches

Time and Day Activated Switches

Outlet-Box-Mount Time and Day Activated Switches

Time and Day Activated Switches

Outdoor Time and Day Activated Switches

Surface/DIN-Rail Mount Timeand Day Activated Switches

Panel-Mount Time and Day Activated Switches

Surface/DIN-Rail Mount Set-to-the-MinuteTime and Day Activated Switches

Panel-Mount Set-to-the-MinuteTime and Day Activated Switches

Set-to-the-Minute High-CurrentTime and Day Activated Switches

Outdoor Set-to-the-Minute High-CurrentTime and Day Activated Switches

Outdoor High-Current Time and Day Activated Switches

High-Current Time and Day Activated Switches

Faucet Timers for Handwashing

Faucet Timers for Handwashing

Combination Wristwatch/Weather Monitors

Combination Wristwatch/Weather Monitors

Surface/DIN-Rail Mount Time
and Day Activated Switches

Surface/DIN-Rail Mount Set-to-the-Minute
Time and Day Activated Switches

Panel-Mount Set-to-the-Minute
Time and Day Activated Switches

Set-to-the-Minute High-Current
Time and Day Activated Switches

Outdoor Set-to-the-Minute High-Current
Time and Day Activated Switches