Electronic Timers | McMaster-Carr

	Input Voltage Input Voltage

	Switching Voltage Switching Voltage

	Timing Adjustment Style Timing Adjustment Style


Push Button	Knob

Trippers	DIP Switches

Joystick	Potentiometer

Screw

	Number of Circuits Controlled Number of Circuits Controlled

	System of Measurement System of Measurement

Inch

Metric

	Switching Current Switching Current

	Timer Relay Function Timer Relay Function

Asymmetrical Repeat Cycle

Delayed Off

Delayed Start (Delay-on-
Make)

Delayed Switch-Off (Delay-on-
Break)

Delayed Switch-On with
Delayed Switch-Off

Fixed On/Off

Interval

Manual Switch Control

Repeat Cycle

Switch-On (Single-Shot)

Switch-On Asymmetrical
Repeat Cycle

	Timing Cycle Timing Cycle

24 Hour

7 Day

365 Day

	Maximum Overall Timing Maximum Overall Timing

	Mounting Location Mounting Location

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

DFARS Specialty Metals
COTS-Exempt

	Specifications Met Specifications Met

	Wire Connection Type Wire Connection Type

Screw Terminals

Quick-Disconnect Terminals

Wire Leads

Plug In

Screw-Clamp Terminals

Solder

Spade Terminals

	Height Height

	Width Width

	Depth Depth

	Number of Terminals Number of Terminals

	Industry Designation Industry Designation

	Display Type Display Type

	Analog
	Digital

	Minimum Operating Voltage Minimum Operating Voltage

	Timing Functions Timing Functions

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

REACH Compliant

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515 Products

Time and Day Activated Switches

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.

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.

Panel-Mount Set-to-the-Minute
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.

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.

Outlet-Box-Mount Time and Day Activated Switches

Switches fit single device (1 gang) outlet boxes.

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.

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.

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.

Low-Current Timer Relays

Socket-Mount Multifunction Timer Relays

Plug these multifunction timer relays into relay sockets for fast installation and replacement.

Compact Socket-Mount Multifunction Timer Relays

Smaller than standard multifunction timer relays, these relays save space in your control cabinet.

Versa-Mount Multifunction Timer Relays

Install relays in a panel cutout or plug into a relay socket.

DIN-Rail Mount Multifunction Timer Relays

Control multiple timing functions from your electrical cabinet—these timer relays mount to 35 mm DIN rail (also known as DIN 3 rail), which is the most commonly used size.

Dual-Channel DIN-Rail Mount
Multifunction Timer Relays

Control two steps of an electrical process from a single relay—with two fully independent channels and 30 different functions, these relays give you a wide range of possibilities.

Long-Life DIN-Rail Mount Multifunction Timer Relays

With no moving parts, these solid state relays have an extended service life.

Ultra-Thin DIN-Rail Mount Multifunction Timer Relays

Maximize space inside your control cabinet.

Versa-Mount Timer Relays

Install these relays in a panel cutout or plug into a relay socket.

Socket-Mount Timer Relays

Plug these timer relays into relay sockets for fast installation and replacement.

Surface-Mount Timer Relays

Use the mounting hole to attach these relays to a flat surface.

Wide-Range Socket-Mount Timer Relays

Postpone starts longer and set wider intervals than with most timer relays.

DIN-Rail Mount Timer Relays

Mount these relays directly to DIN rail.

Long-Life Surface-Mount Timer Relays

With no moving parts, these solid state relays have an extended service life.

Medium-Current Timer Relays

Also known as power relays, these relays are rated for 1 horsepower or 30 amps and are suitable for compressors, blowers, and heaters.

Programmable Logic Controllers

Expansion Modules for Programmable Logic Controllers

No need to program multiple PLCs—these modules expand your automated system, keeping everything conjoined and configured on one processor. Use them when you’re out of space on your DIN rail or need additional input/output functions.

Compact Programmable Logic Controllers

Smaller than other PLCs, these controllers save space in your control cabinet. They combine the functionality of a relay, timer relay, and switch in one unit, so you can program simple automation jobs.

Easy-Program Logic Controllers

Design and operate up to six simultaneous programs without symbols or technical language—the on-screen instructions use simple English.

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.

Multifunction Smartwatches

Keep your phone in your pocket and your hands free—these smartwatches perform a variety of functions on your wrist.

Stopwatches

Quickly view starts and finishes on a digital screen.

Metal- and X-Ray-Detectable Stopwatches

Track time on food processing lines while reducing the risk of contaminating the food. To help you comply with Hazard Analysis and Critical Control Point (HACCP) programs, these plastic stopwatches contain metal and chemical additives that will set off metal detectors and show up on X-ray machines.

Clocks

Scheduling Timers

Program these timers to trigger an audible signal for events throughout the week such as lunch and break times.

Time Clocks

Record attendance by punching in and out on time cards.

Finger-Scan Time Clocks

These clocks scan employee fingerprints to register attendance.

Proximity-Touch Time Clocks

Record attendance with the touch of a badge or key fob.

Top-Load Employee Time Cards

Time Clocks with Message Stamp

Stamp your time cards with messages such as PAID and VOID as well as time information.

Side-Load Employee Time Cards

These time cards work with all standard side-load time clocks.

Time and Date Stamps

Record the time and date on invoices, freight bills, legal papers, and other time-sensitive documents.

Total-the-Hours Time Clocks

These clocks save you time at the end of a pay period by automatically totaling each employee’s hours on their time cards.

Faucet Timers for Handwashing

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

Grounds Maintenance

Combination Wristwatch/Weather Monitors

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

Garden Hose Timers

Water up to four cycles per day—from 1 minute to 4 hours per cycle.

Timers for Underground Sprinkler Systems

Water six different zones up to four times a day, with cycles from 1 minute to 4 hours.

Checkpoint Recorders

Touch a hand-held key fob to buttons installed at checkpoints to record the location, date, and time. Also known as watchmen’s clocks, recorders are often used to ensure that security guards make their scheduled rounds.

Electrically Actuated Counters

DIN-Panel-Mount Electrically
Actuated Counters with Output Relay

For quick installation, these counters fit into standard DIN panel cutouts.

DIN-Panel-Mount Electrically Actuated Counters

For quick installation, these counters fit into standard DIN panel cutouts.

Panel-Mount Electrically Actuated Counters

Slot these counters into a control or electrical panel cutout.

Panel-Mount Electrically Actuated
Counters with Output Relay

Slot these counters into a control or electrical panel cutout.

Surface-Mount Electrically Actuated Counters

These counters have mounting holes and a base plate for securing to a wall or work surface.

Combination Switch-Contact/Electrically Actuated Counters

Combination Switch-Contact/Electrically
Actuated Counters

Large-Display Combination
Switch-Contact/Electrically Actuated Counters

The digits displayed on these counters are visible up to 100 ft. away.

Large-Display Combination Switch-Contact/Electrically
Actuated Counters with Output Relay

The digits displayed on these counters are visible up to 100 ft. away.

Combination Switch-Contact/Electrically
Actuated Counters with Output Relay

Counters/Ratemeters

Wire these counters/ratemeters to an electrical pulse-emitting switch, sensor, or encoder to count input while tracking rates in units such as gallons per minute.

DIN-Panel-Mount Counters/Ratemeters

For quick installation, these counters/ratemeters fit a standard 1/8 DIN panel cutout.

Minute and Hour Meters

Electric-Motor-Actuated Hour Meters

With a sensor that’s activated by your electric motor’s magnetic field, these meters show the motor’s running time.

Electrically Actuated Minute Meters

DIN-Rail-Mount Electrically Actuated Hour Meters

Quickly install these meters onto a DIN rail instead of on a surface or into panels.

Panel-Mount Electrically Actuated Hour Meters

Slot these counters into a control or electrical panel cutout.

Electrically Actuated Hour Meters with Output Relay

Send a signal to another device when the counter reaches a set point. The signal can start/stop a process or trigger an alarm.

Time and Day Activated Switches

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

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

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

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

Time and Day Activated Switches

Outdoor Time and Day Activated Switches

Outlet-Box-Mount Time and Day Activated Switches

Surface/DIN-Rail Mount Timeand Day Activated Switches

Panel-Mount Time and Day Activated Switches

Outdoor High-Current Time and Day Activated Switches

High-Current Time and Day Activated Switches

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

Low-Current Timer Relays

Socket-Mount Multifunction Timer Relays

Compact Socket-Mount Multifunction Timer Relays

Versa-Mount Multifunction Timer Relays

DIN-Rail Mount Multifunction Timer Relays

Dual-Channel DIN-Rail MountMultifunction Timer Relays

Long-Life DIN-Rail Mount Multifunction Timer Relays

Ultra-Thin DIN-Rail Mount Multifunction Timer Relays

Versa-Mount Timer Relays

Socket-Mount Timer Relays

Surface-Mount Timer Relays

Wide-Range Socket-Mount Timer Relays

DIN-Rail Mount Timer Relays

Long-Life Surface-Mount Timer Relays

Medium-Current Timer Relays

Medium-Current Timer Relays

Programmable Logic Controllers

Expansion Modules for Programmable Logic Controllers

Compact Programmable Logic Controllers

Easy-Program Logic Controllers

Timing

Timers

Analog Timers

Multifunction Smartwatches

Stopwatches

Metal- and X-Ray-Detectable Stopwatches

Clocks

Scheduling Timers

Time Clocks

Finger-Scan Time Clocks

Proximity-Touch Time Clocks

Top-Load Employee Time Cards

Time Clocks with Message Stamp

Side-Load Employee Time Cards

Time and Date Stamps

Total-the-Hours Time Clocks

Faucet Timers for Handwashing

Faucet Timers for Handwashing

Grounds Maintenance

Combination Wristwatch/Weather Monitors

Garden Hose Timers

Timers for Underground Sprinkler Systems

Checkpoint Recorders

Checkpoint Recorders

Electrically Actuated Counters

DIN-Panel-Mount ElectricallyActuated Counters with Output Relay

DIN-Panel-Mount Electrically Actuated Counters

Panel-Mount Electrically Actuated Counters

Panel-Mount Electrically ActuatedCounters with Output Relay

Surface-Mount Electrically Actuated Counters

Combination Switch-Contact/Electrically Actuated Counters

Combination Switch-Contact/ElectricallyActuated Counters

Large-Display CombinationSwitch-Contact/Electrically Actuated Counters

Large-Display Combination Switch-Contact/ElectricallyActuated Counters with Output Relay

Combination Switch-Contact/ElectricallyActuated Counters with Output Relay

Counters/Ratemeters

Counters/Ratemeters

DIN-Panel-Mount Counters/Ratemeters

Minute and Hour Meters

Electric-Motor-Actuated Hour Meters

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

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

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

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

Surface/DIN-Rail Mount Time
and Day Activated Switches

Dual-Channel DIN-Rail Mount
Multifunction Timer Relays

DIN-Panel-Mount Electrically
Actuated Counters with Output Relay

Panel-Mount Electrically Actuated
Counters with Output Relay

Combination Switch-Contact/Electrically
Actuated Counters

Large-Display Combination
Switch-Contact/Electrically Actuated Counters

Large-Display Combination Switch-Contact/Electrically
Actuated Counters with Output Relay

Combination Switch-Contact/Electrically
Actuated Counters with Output Relay