Signal Timers | McMaster-Carr

	Timing Functions Timing Functions

	Maximum Timer Duration Maximum Timer Duration

	Power Source Power Source

	Resolution Resolution

1 sec.

1 min.

1/100 sec.

	Maximum Number of Events Maximum Number of Events

	Number of Displays Number of Displays

	Case Color Case Color

	White		Black
	Gray		Red
	Silver		Yellow

	Maximum Alarm Duration Maximum Alarm Duration

	Battery Size Battery Size

AAA

1.5V

CR2032

	Height Height

	Width Width

	Depth Depth

	Diameter Diameter

2 7/8"

3 1/8"

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

DFARS Specialty Metals
COTS-Exempt

	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

	Specifications Met Specifications Met

Mil. Spec.

	Display Time Display Time

12 hr.

24 hr.

	Lens Material Lens Material

Plastic

Glass

	Band Material Band Material

Plastic

Silicone

	Housing Material Housing Material

Plastic

Fiber-Reinforced Plastic

	Minimum Temperature Minimum Temperature

0° F

14º F

	Alarm Duration Alarm Duration

36 Products

About Timing Functions

Style Q timers have an extra-loud alarm that can be heard over background noise in a typical manufacturing environment.

Timers with a calibration certificate traceable to NIST have been tested to NIST standards to ensure accuracy.

Timers with a memory function automatically return the display to the last programmed time. Good for timing repetitive intervals.

										Case
Style	Timing Functions	Max. No. of Events	Max. Timer Duration	Max. Alarm Duration	Resolution	Ht.	Wd.	Dia.	Dp.	Material	Color	Backing Type	Batteries Included	Features		Each
Timers
A	Count Up Count Down Pause	1	100 min.	12 sec.	1 sec.	2 3/4"	2 3/8"	__	1/4"	Plastic	Gray	Magnetic	Yes	Alarm	00000000	000000
B	Count Up Count Down Pause	1	100 min.	12 sec.	1 sec.	2 1/8"	2 1/2"	__	1"	Plastic	White	Magnetic	Yes	Alarm Built-In Stand Memory Function	00000000	00000
C	Count Up Count Down Pause Clock	1	24 hrs.	Continuous	1 sec.	1 3/4"	__	3 1/8"	__	Plastic	White	__	Yes	Alarm Memory Function	00000000	00000
D	Count Up Count Down Pause	1	24 hrs.	12 sec.	1 sec.	2 1/2"	3 3/4"	__	1"	Plastic	Gray	Magnetic	Yes	Alarm Built-In Stand Memory Function	0000000	00000
E	Count Up Count Down Pause	1	9,999 min.	Continuous	1 min.	2"	3"	__	5/8"	Plastic	Red	Magnetic	Yes	Alarm Built-In Stand Memory Function	0000000	00000
F	Count Up Count Down Pause Clock	1	24 hrs.	1 min.	1/100 sec.	3 3/4"	3 3/4"	__	3"	Plastic	Gray	__	Yes	Alarm Built-In Stand Memory Function	000000	00000
G	Count Up Count Down Pause Clock	4	100 hrs.	1 min.	1 sec.	2 1/2"	2 3/4"	__	1/2"	Plastic	White	__	Yes	Alarm Memory Function	0000000	00000
H	Count Up Count Down Pause Clock	6	100 hrs.	1 min.	1 sec.	2 3/8"	2 3/4"	__	1"	Plastic	Gray	__	Yes	Alarm Memory Function	0000000	00000
J	Count Up Count Down Clock	2	3,000 days	15 sec.	1/100 sec.	2 7/8"	5"	__	7/8"	Plastic	Silver	__	Yes	Built-In Stand	00000000	00000
K	Count Down	1	100 min.	30 sec.	1 sec.	2 1/2"	2 1/2"	__	1/2"	Plastic	Red	Magnetic	Yes	Alarm Built-In Stand Memory Function	00000000	00000
L	Count Up Count Down	2	24 hrs.	1 min.	1 sec.	3 3/4"	5"	__	1/2"	Plastic	White	__	Yes	Alarm Memory Function	00000000	00000
M	Count Up Count Down	4	100 hrs.	1 min.	1 sec.	2 7/8"	2 1/2"	__	1/2"	Plastic	Black	Magnetic	Yes	Alarm Built-In Stand	00000000	00000
Timers with Calibration Certificate Traceable to NIST
E	Count Up Count Down Pause	1	9,999 min.	Continuous	1 min.	2"	3"	__	5/8"	Plastic	Red	Magnetic	Yes	Alarm Built-In Stand Memory Function	0000000	00000
J	Count Up Count Down Clock	2	3,000 days	15 sec.	1/100 sec.	2 7/8"	5"	__	7/8"	Plastic	Silver	__	Yes	Built-In Stand	00000000	00000
N	Count Up Count Down Pause	1	100 min.	1 min.	1 sec.	2 1/4"	2 1/2"	__	1/2"	Plastic	Black	Magnetic	Yes	Alarm Built-In Stand	0000000	00000
P	Count Up Count Down Pause Clock	2	24 hrs.	1 min.	1 sec.	2 1/8"	2 3/4"	__	7/8"	Plastic	Black	Magnetic	Yes	Alarm Built-In Stand Memory Function	0000000	00000
Q	Count Up Count Down Pause	2	100 hrs.	1 min.	1 sec.	3"	3 1/2"	__	5/8"	Plastic	White	Magnetic	Yes	Alarm Built-In Stand Memory Function	0000000	00000
R	Count Up Count Down Pause Clock	3	20 hrs.	1 min.	1 sec.	3 7/8"	2 5/8"	__	1"	Plastic	Black	__	Yes	Alarm Memory Function	0000000	00000
S	Count Up Count Down	1	100 hrs.	1 min.	1 sec.	2"	1 1/2"	__	3/4"	Plastic	White	Magnetic	Yes	Alarm Clip Keychain Ring	00000000	00000
T	Count Up Count Down	1	100 min.	1 min.	1 sec.	2 3/4"	3"	__	1"	Plastic	White	__	Yes	Alarm Built-In Stand	00000000	00000
U	Count Up Count Down	1	100 min.	1 min.	1 sec.	3 1/4"	3"	__	1/2"	Plastic	White	__	Yes	Alarm Built-In Stand Memory Function Suction Cups Waterproof	00000000	00000
V	Count Down	3	100 hrs.	1 min.	1 sec.	3 1/4"	2"	__	1/2"	Plastic	White	Magnetic	Yes	Alarm Built-In Stand Memory Function	00000000	00000
W	Count Up Count Down	1	24 hrs.	1 min.	1 sec.	3 1/4"	2 1/2"	__	1/2"	Plastic	White	__	Yes	Alarm Built-In Stand Memory Function Repeat Function Voice Alerts	00000000	00000

Analog Timers

									Case
	Timing Functions	Max. No. of Events	Max. Timer Duration, min.	Resolution	Max. Alarm Duration	Ht.	Wd.	Dp.	Material	Color	Power Source	Features		Each
A	Count Down	1	60	1 min.	1 sec.	3 3/4"	3 3/4"	2"	Plastic	White	Spring Wound	Alarm	0000000	000000
B	Count Down	1	30	1 min.	1 sec.	3 1/2"	3"	2 1/2"	Plastic	Black	Spring Wound	Alarm	000000	00000
B	Count Down	1	60	1 min.	1 sec.	3 1/2"	3"	2 1/2"	Plastic	Black	Spring Wound	Alarm	000000	00000

Stopwatches

These stopwatches are water resistant.

Stopwatches with a calibration certificate traceable to NIST have been tested to NIST standards to ensure accuracy.

				Case
Style	Timing Functions	Max. Timer Duration, hrs.	Accuracy	Material	Color	Lens Material	Batteries Included	Features	Includes		Each
Stopwatches
B	Count Up, Split, Lap, Pause, Count Down	10	±0.04 sec./hr.	Plastic	Black	Plastic	Yes	Alarm	Lanyard	0000000	000000
Stopwatches with Calibration Certificate Traceable to NIST
D	Count Up, Split, Lap, Pause, Clock	24	±0.04 sec./hr.	Plastic	Black	Plastic	Yes	Alarm	Lanyard	0000000	00000
E	Count Up, Split, Pause, Clock	24	±0.4 sec./hr.	Plastic	Yellow	Plastic	Yes	Alarm	Lanyard	0000000	00000

Multifunction Smartwatches

Compass

GPS Navigation

Health and Fitness Tracking

Night Vision Mode

Weather and Elevation Monitoring

Multifunction Smartwatch

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.

Display				Housing		Band
Length	Width	Display Time	Temperature Range, °F	Material	Color	Material	Color	Closure Type	Battery Life	Features	Specifications Met		Each
7/8"	7/8"	12 hr., 24 hr.	0° to 140°	Fiber-Reinforced Plastic	Black	Silicone	Black	Buckle	28 days	Compass GPS Navigation Health and Fitness Tracking Night Vision Mode Weather and Elevation Monitoring	MIL-STD-810	0000000	0000000

Combination Wristwatch/Weather Monitors

Monitor your environment when working outdoors. These wristwatches display time, date, temperature, barometric pressure, and altitude. It also has a stopwatch and digital compass.

		Stopwatch			Housing		Band
Face Dia.	Display Time	Timing Function	Max. Time, hrs.	Temperature Range, °F	Material	Color	Material	Color	Closure Type	Power Source		Each
2 1/8"	12 hr., 24 hr.	Countdown, Split	1,000	14° to 140°	Plastic	Black	Plastic	Black	Buckle	Solar	0000000	0000000

Scheduling Timers

Program this timer to trigger an audible signal for events throughout the week such as lunch and break times. It has a keypad for scheduling events and adjusting the signal duration. Keypad has a user-defined security code to restrict access. The backup battery saves programmed data and lasts for 10 years. It does not power the timers.

Timer

Max. No. of Events per Week	For Max. No. of Alarms	Alarm Duration	Ht.	Wd.	Dp.	Material	Color	Time Convention	Electrical Connection Type	Current, A	Voltage	Backup Battery Life		Each
9,999	9,999	1-9 Seconds, Continuous	8 1/2"	11"	6 1/2"	Polycarbonate Plastic	Gray	12 Hour, 24 Hour	Hardwire	2.5	120V AC	10 yrs.	0000000	000000000

Replacement Backup Battery (1 per Pkg.)

0000000

Pkg.

00000

Bell

Dia.	Volume	Current, A	Voltage	For Use Outdoors	Mounting Hardware Included		Each
6"	86 dBA @ 10 ft.	0.085	120V AC	Yes	Yes	0000000	0000000

Buzzer

Wd.	Ht.	Volume	Current, A	Voltage	For Use Outdoors	Mounting Hardware Included		Each
4"	4"	95 dBA @ 10 ft.	0.16	120V AC	Yes	Yes	0000000	000000

Faucet Timers for Handwashing

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.

Thread Size	Gender	Timer Duration, sec.	Diameter	Height	Flow Rate, gpm	Batteries Included	Features	Includes		Each
55/64"-27	Female	30	2 7/8"	5 1/4"	2	Yes	Auto Reset, LCD Display	15/16"-27 Male Adapter, Wrench	0000000	0000000