McMaster-Carr

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.

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

Power-Saving Panel-Mount
Timer Switches

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

Timer Switches

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

High-Visibility Timer Switches

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

Cycle Timer Switches

Repeat a cycle of on/off intervals every hour.

Smartphone-Programmable Time
and Day Activated Switches

Remotely program these switches via bluetooth signal with a smartphone, tablet, or PC.

Low-Current Timer Relays

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.

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.

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.

Versa-Mount Multifunction
Timer Relays

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

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.

Socket-Mount Timer Relays

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

Wide-Range Socket-Mount
Timer Relays

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

Long-Life Surface-Mount
Timer Relays

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

Surface-Mount Timer Relays

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

Versa-Mount Timer Relays

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

DIN-Rail Mount Timer Relays

Mount these relays directly to DIN rail.

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

Compact Programmable
Logic Controllers

Smaller than other programmable logic controllers, these controllers save space in your control cabinet.

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.

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.

Analog Stopwatches

Record one event from start to finish with these traditional dial stopwatches.

Grounds Maintenance

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.

Combination
Wristwatch/Weather Monitors

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

Counting

Panel-Mount Electrically
Actuated Hour Meters

Slot these counters into a control or electrical panel cutout.

DIN-Rail-Mount Electrically
Actuated Hour Meters

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

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.

Electrically Actuated Minute Meters

Switch-Contact-Actuated Hour Meters

These meters do not require voltage to register a count.

Vibration-Actuated Hour Meters

Record the running time of machines and vehicles that vibrate while operating.

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.

Counters/Hour Meters

Keep track of time while counting events.

Preventative Maintenance
and Inspection Indicators

Mount these indicators to your equipment, and their bright LED will catch your attention when it’s time for maintenance or inspection.

Clocks

Time Clocks

Record attendance by punching in and out on time cards.

Side-Load Employee Time Cards

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

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.

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.

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.

Time and Date Stamps

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

Scheduling Timers

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

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.