Digital Timer Switches | McMaster-Carr

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30 Products

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. A backup battery or capacitor maintains the program during a power outage.

7-Day Timing Cycle—Seven-day switches can perform a different program each day of the week. They have a day skipper that can suspend operation for one to six days.

2 Circuits Controlled—Two-circuit switches can apply a different program to each circuit.

												Mounting
	No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage, V AC	Max. On/Off Cycles, per day	Min. Set Time, min.	Timing Adjustment Style	Housing Material	Switch Designation	Ht.	Wd.	Dp.	Fasteners Included	Hole Dia.	Knockout Trade Size	Wire Connection	Environment	Certification		Each
7 day—With Battery Backup, Lockout, Day Skipper



		2	30 amp @ 240V AC	120/208/240/277	28	1	Push Button	Steel	SPST, DPST	7 3/4"	5"	3"	No	0.16"	1/2, 3/4	Screw Terminal	Indoor Only	UL Listed, CSA Certified	7459K89	0000000


		24-Hr. Timing Cycle—With Capacitor Backup, Lockout



				1	30 amp @ 240V AC	120/208/240/277	48	1	Push Button	Steel	SPST	7 7/8"	5 1/8"	3 7/16"	No	3/16"	1/2, 3/4	Screw Terminal	Indoor Only	UL Listed, CSA Certified	7459K81	000000


				2	30 amp @ 240V AC	120/208/240/277	48	1	Push Button	Steel	SPST, DPST	7 7/8"	5 1/8"	3 7/16"	No	3/16"	1/2, 3/4	Screw Terminal	Indoor Only	UL Listed, CSA Certified	7459K82	000000


				7-Day Timing Cycle—With Capacitor Backup, Day Skipper, Lockout



						1	30 amp @ 240V AC	120/208/240/277	48	1	Push Button	Steel	SPST	7 7/8"	5 1/8"	3 7/16"	No	3/16"	1/2, 3/4	Screw Terminal	Indoor Only	UL Listed, CSA Certified	7459K83	000000

Smart Time and Day Activated Switches

Use your smart phone to turn equipment on and off at a set time and day. These switches connect to your phone via NFC (near field communication) and work with a free app to set schedules, adjust settings, and save programs. They can perform a different program each day of the week, and they compensate for leap year and daylight savings time. You can remotely apply programs across compatible switches, so it’s easy to reprogram lighting or equipment in large facilities. These switches mount to a flat surface or attach to DIN rail.

Astronomical Timing—Switches with astronomical timing can be set to turn lights on and off based on sunrise and sunset.

	Switching Current @ Voltage	Input Voltage	Max. On/Off Cycles, per wk.	Min. Set Time, min.	Timing Adjustment Style	Switch Designation	Ht.	Wd.	Dp.	Electrical Connection	Operating System Compatibility	For DIN Rail Ht., mm	Wire Connection	Certification		Each
7-Day Timing Cycle



	1	16 amp @ 240V AC	120V AC/208V AC/240V AC/120V DC/240V DC	50	1	Joystick	SPDT	3.4"	1.4"	2.2"	NFC	Android 5.1 or Later, iOS 13.1 or Later	35	Screw Terminal	UL Listed, C-UL Listed, CE Marked	7818N101	0000000


	2	16 amp @ 240V AC	120V AC/208V AC/240V AC/120V DC/240V DC	50	1	Joystick	DPDT	3.4"	1.4"	2.2"	NFC	Android 5.1 or Later, iOS 13.1 or Later	35	Screw Terminal	UL Listed, C-UL Listed, CE Marked	7818N102	000000


	7-Day Timing Cycle—With Astronomical Timing



			1	16 amp @ 240V AC	120V AC/208V AC/240V AC/120V DC/240V DC	50	1	Joystick	SPDT	3.4"	1.4"	2.2"	NFC	Android 5.1 or Later, iOS 13.1 or Later	35	Screw Terminal	UL Listed, C-UL Listed, CE Marked	7818N103	000000


			2	16 amp @ 240V AC	120V AC/208V AC/240V AC/120V DC/240V DC	50	1	Joystick	DPDT	3.4"	1.4"	2.2"	NFC	Android 5.1 or Later, iOS 13.1 or Later	35	Screw Terminal	UL Listed, C-UL Listed, CE Marked	7818N104	000000

Time and Day Activated Switches

7-Day Timing Cycle

Program these switches to turn a device on and off at a set time and day. They have a three-prong outlet to plug devices directly into the switch. Use with lamps and other small electrical loads. All have an override to bypass the programmed on/off settings.

7-Day Timing Cycle—Seven-day switches can perform a different program each day of the week.

Astronomical Timing—Switches with astronomical timing can be set to turn lights on and off based on sunrise and sunset.

										Electrical
	Switching Current @ Voltage	Max. On/Off Cycles, per day	Min. Set Time, min.	Timing Adjustment Style	With Override	No. of Outlets	Ht.	Wd.	Dp.	Connection	No. of Blades	Certification		Each
7-Day Timing Cycle—With Astronomical Timing, Random On/Off Option



		15 amp @ 120V AC	14	1	Push Button	Yes	2	3"	3 1/2"	3 1/2"	Straight Blade	3	UL Listed, C-UL Listed	7001K58	000000

Outdoor Time and Day Activated Switches


24-Hr. Timing Cycle	7-Day Timing Cycle

Designed to work with landscape lighting and filter pumps, these switches turn equipment on and off at a set time and day. They control two devices at once, and have three-prong outlets to plug devices directly into the switch. All have an override to bypass the programmed on/off settings.

24-Hr. Timing Cycle—24-hr. switches repeat the same program daily. Position trippers around the clock dial to set on and off times.

7-Day Timing Cycle—Seven-day switches can perform a different program each day of the week. They have astronomical timing that can be set to turn lights on and off based on sunrise and sunset.

NEMA 3R Enclosure Rating—NEMA 3R rated switches are protected against falling liquids and light splashing.

Light Sensor Control—Switches with light sensor control allow one device to be controlled by the presence or absence of light.

												Electrical			Mounting
	Max. On/Off Cycles, per day	Min. Set Time, min.	Timing Adjustment Style	Tripper Type	No. of Trippers	Switching Current @ Voltage	No. of Outlets	Features	Ht.	Wd.	Dp.	Connection	No. of Blades	Cord Lg., ft.	Fasteners Included	No. of Holes	Hole Dia.	Min. Ht., ft.		Each
24-Hr. Timing Cycle—NEMA 3R



		12	30	Tripper	Removable	4	15 amp @ 120V AC	2	Light Sensor Control	9 3/8"	5 1/2"	3 3/8"	Straight Blade	3	2	No	4	1/4"	—	7185K26	0000000


		7-Day Timing Cycle



				7	1	Push Button	—	—	15 amp @ 120V AC	2	Astronomical Timing, Random On/Off Option	5 1/8"	5 1/4"	1 7/8"	Straight Blade	3	2	No	2	0.31"	4.5	7001K56	00000

Trippers

		Pkg.
Additional Trippers (Pkg. of 2 Pairs)	7993K71	00000

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. More precise than other time and day switches, they program on/off times for equipment down to the exact minute. They control equipment with high currents, such as landscape lighting, pumps, and heaters. A backup battery maintains the program during a power outage.

24-Hr. Timing Cycle—24-hr. switches repeat the same program daily.

7-Day Timing Cycle—Seven-day switches can perform a different program each day of the week.

365-Day Timing Cycle—Seven-day/365-day switches can perform a different program each day of the week or year, and compensate for leap year and daylight savings time. Override regular programming for up to 99 holidays for any length of time. They can also be used to activate equipment such as bells and signals for just a few seconds.

Astronomical Timing—Switches with astronomical timing can be set to turn lights on and off based on sunrise and sunset.

Day Skipper—Switches with a day skipper can be programmed to skip operation for one to six days.

												Mounting
	No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage, V AC	Max. On/Off Cycles	Min. Set Time, min.	Timing Adjustment Style	Housing Material	Switch Designation	Ht.	Wd.	Dp.	Fasteners Included	Hole Dia.	Knockout Trade Size	Wire Connection	Environment	Certification		Each
24-Hr. Timing Cycle—With Battery Backup, Lockout



		1	30 amp @ 240V AC	120/208/240/277	20 per day	1	Push Button	Polycarbonate	SPST	8 3/8"	5"	3 1/8"	No	0.26"	1/2, 3/4	Screw Terminal	Outdoor, Wet	UL Listed	7459K65	0000000


		2	30 amp @ 240V AC	120/208/240/277	20 per day	1	Push Button	Polycarbonate	DPST	8 3/8"	5"	3 1/8"	No	0.26"	1/2, 3/4	Screw Terminal	Outdoor, Wet	UL Listed	7459K67	000000


		7 day—With Battery Backup, Lockout, Day Skipper



				2	30 amp @ 240V AC	120/208/240/277	20 per day	1	Push Button	Polycarbonate	DPST	8 3/8"	5"	3 1/8"	No	0.26"	1/2, 3/4	Screw Terminal	Outdoor, Wet	UL Listed	7459K86	000000


				7 day—With Battery Backup, Lockout, Day Skipper, Astronomical Timing



						1	30 amp @ 240V AC	120/208/240/277	20 per day	1	Push Button	Polycarbonate	SPDT	8 3/8"	5"	3 1/8"	No	0.26"	1/2, 3/4	Screw Terminal	Outdoor, Wet	UL Listed	7459K91	000000


						7 day/365 day—With Battery Backup, Lockout, Astronomical Timing



								1	30 amp @ 240V AC	120/208/240/277	4,000 per yr.	1	Push Button	Steel	SPDT	8 5/8"	5 3/4"	3 5/8"	No	0.19"	1/2, 3/4	Screw Terminal	Outdoor, Wet	UL Listed, CSA Certified	70915K77	000000


								2	30 amp @ 240V AC	120/208/240/277	4,000 per yr.	1	Push Button	Steel	SPDT	8 5/8"	5 3/4"	3 5/8"	No	0.19"	1/2, 3/4	Screw Terminal	Outdoor, Wet	UL Listed, CSA Certified	70915K81	000000

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


24-Hr. Timing Cycle	7-Day Timing Cycle

Mount these switches to a flat surface or attach to DIN rail. More precise than other time and day switches, they program on/off times for equipment down to the exact minute. All have an override to bypass the programmed on/off settings. A backup battery maintains the program during a power outage.

24-Hr. Timing Cycle—24-hour switches repeat the same program daily. They control two circuits and can apply a different program to each circuit.

7-Day Timing Cycle—Seven-day switches can perform a different program each day of the week.

												Mounting			For Panel Cutout
	No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage	Max. On/Off Cycles, per day	Min. Set Time, min.	Timing Adjustment Style	With Override	Switch Designation	Ht.	Wd.	Dp.	Fasteners Included	No. of Holes	For DIN Rail Ht., mm	Ht.	Wd.	Wire Connection	Certification		Each
24-Hr. Timing Cycle—With Battery Backup



		2	15 amp @ 250V AC	120V AC/240V AC	12	1	Push Button	Yes	SPST-NO	3.8"	3.8"	2.2"	No	2	35	3.62"	3.62"	Screw Terminal	UL Recognized Component, CSA Certified	70395K71	0000000


		7-Day Timing Cycle—With Battery Backup



				1	15 amp @ 277V AC	12V AC/24V AC/24V DC	20	1	Push Button	Yes	SPDT	4.1"	2.9"	2.2"	—	—	—	—	—	Screw Terminal	UL Recognized Component, C-UL Recognized Component	71075K161	000000


				1	15 amp @ 277V AC	120V AC/277V AC	20	1	Push Button	Yes	SPDT	4.1"	2.9"	2.2"	—	—	—	—	—	Screw Terminal	UL Recognized Component, C-UL Recognized Component	71075K171	000000
				1	15 amp @ 277V AC	120V AC/277V AC	50	1	Push Button	Yes	SPDT	4.1"	2.9"	2.2"	—	—	—	—	—	Screw Terminal	UL Recognized Component, C-UL Recognized Component	71075K211	000000

Outlet-Box-Mount Time and Day Activated Switches

7-Day Timing

Cycle

Switches fit 1 gang outlet boxes. Program them to turn a device on and off at a set time and day. They’re often used with lamps and other small electrical loads.

7-Day Timing Cycle—Seven-day switches can perform a different program each day of the week.

Astronomical Timing—Use the astronomical timing to turn lights on and off based on sunrise and sunset; this option can be used independently or in combination with timed programming.

	Switching Current @ Voltage	Max. On/Off Cycles, per wk.	Min. Set Time, min.	Timing Adjustment Style	For Outlet Box Designation	Wire Connection	Wire Lead Lg.	Certification		Each
7-Day Timing Cycle—With Astronomical Timing, Battery Backup, LCD Display



	1	15 amp @ 120V AC	40	1	Push Button	1 Gang	Wire Leads	6"	CSA-US Certified, CSA Certified	7367K61	000000

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. They’re often used with lights.

Push Button with Countdown LCD, Set Time Recall and Beep and Light Alerts

Image of Product. Front orientation. Timer Switches. Wall-Mount Timer Switches, Countdown LCD, Timing-Adjustment Push Button.

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

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

With Override—Switches with override can bypass the automatic shut-off.

	Switch Starting Position	Switching Current @ Voltage	hp @ Switching Voltage	Set Time	For Outlet Box Designation	Wire Connection	Choose a Color		Each
With Override



	1	1 Off	41 mA @ 24V AC, 12 mA @ 24V DC	—	5 min. to 12 hr.	1 Gang	Screw Terminal	Almond , Black , Gray , Ivory , White	6550T2	0000000


	1	1 Off	6.6 amp @ 120V AC, 4.3 amp @ 277V AC	1/6 hp @ 125V AC	5 min. to 12 hr.	1 Gang	Screw Terminal	Almond , Black , Gray , Ivory , White	6550T1	00000

Smart DIN-Rail Mount Multifunction Timer Relays


1 Circuit Controlled	2 Circuits Controlled

Whether installed in an electrical cabinet or hard-to-reach area, these timer relays are controlled remotely from your smartphone. They connect to your phone via a free downloadable app with NFC (Near Field Communication), so you can set time delay ranges, adjust settings, and save programs. An LED indicator on the relay shows that your switch is on and whether it’s actuated. Mount them directly to 35 mm DIN rail (also known as DIN 3 rail).

Although these relays have 30 different functions, they all fall into 11 categories. Within these categories, you can select different functions to allow you to add a switch, program a delay, or change how the relay responds to a trigger (turning on or off, pausing, or resetting).

Delayed Start (Delay on Make) Timer—These functions allow you to set how long it takes for the relay to turn on after input voltage is applied. For example, a drill starts pumping lubricant immediately, but it does not start rotating until the set time has elapsed.

Delayed Switch Off (Delay on Break) Timer—These functions use a switch instead of input voltage. When the switch is turned off, the relay remains on for a programmed amount of time before turning off. For example, a projector’s light is turned off with a switch, but its cooling fan continues to run for a set time.

Delayed Switch-On with Delayed Switch-Off Timer—This function uses a switch instead of an input voltage. It allows you to set how long it takes the relay to turn on after a switch is turned on, and how long it will stay on after the switch is turned off. For example, a furnace turns on, but the fan doesn’t start pushing air through the vents until it has been heated. When the furnace turns off, the fan keeps blowing to circulate all the hot air.

Interval Timer—These functions use input voltage to turn on the relay for a programmed amount of time. For example, when a part moving down a conveyor reaches a certain location, a cleaning spray comes on for a set amount of time.

Switch on (Single Shot) Timer—These functions require a switch to activate the relay, which stays on for the programmed amount of time. For example, lights in a storage room are turned on with a switch and stay on for a set time before turning off.

Repeat-Cycle Timer—These functions start with an on cycle and then alternate between an on cycle and off cycle of equal durations until input voltage is removed, such as with a flashing light.

Asymmetrical-Repeat-Cycle Timer—These functions start with an on-cycle and then have an off-cycle, but these cycles have different durations. The cycles repeat until input voltage is removed. For example, a sprinkler system sprays in short bursts followed by longer rest periods, on and off until input voltage is removed.

Manual-Switch-Control Timer—Use these functions to turn the relay on and off with a switch.

Fixed On/Off Timer—The on function keeps the relay on whenever input voltage is applied; it will only turn off if the voltage is removed. The off function keeps the relay in an off state, even if input voltage is applied.

Star-to-Delta Timer—These functions allow you to set the time delay within the relay's range to switch contacts on a three-phase motor from star to delta configuration. Since star configuration takes less voltage to start than delta, these functions prevent voltage dips that often happen when a motor starts and are gentler on mechanical parts.

Switch-On Asymmetrical Repeat Cycle Timer—These functions require a switch to activate the timing function. The input voltage is applied the whole time, and when you turn the switch on, the relay begins with an on-cycle followed by an off-cycle. These cycles have different durations, and they repeat until you turn the switch off. They could be used to turn on a motor or other system for a short period and then turn it off for a longer rest period, repeating that pattern until the switch is turned off.

	Input Voltage	Control Power, W	Timer Relay Function	Overall Timing Range	Switching Current @ Voltage	Max. Switching Voltage, V AC	Ht.	Wd.	Dp.	Operating System Compatibility	Features		Each
1 Circuit Controlled with 1 Off or 1 On—SPDT



	8	12V AC, 24V AC, 48V AC, 120V AC, 240V AC, 12V DC, 24V DC, 48V DC, 60V DC, 120V DC, 240V DC	0.15	Manual Switch Control Fixed On/Off Switch on (Single Shot) Delayed Start (Delay on Make) Delayed Switch Off (Delay on Break) Delayed Switch-On with Delayed Switch-Off Interval Repeat Cycle Asymmetrical Repeat Cycle Switch-On Asymmetrical Repeat Cycle	0.1 sec. to 999 day	8 amp @ 240V AC	250	4.1"	0.7"	2.5"	Android 5.0 or Later, iOS 14.4 or Later	LED Indicator	8491N12	000000


	2 Circuits Controlled with 2 Off or 2 On—DPDT



			9	24V AC, 48V AC, 120V AC, 240V AC, 24V DC, 48V DC, 60V DC, 120V DC, 240V DC	0.6	Manual Switch Control Fixed On/Off Switch on (Single Shot) Delayed Start (Delay on Make) Delayed Switch Off (Delay on Break) Delayed Switch-On with Delayed Switch-Off Interval Repeat Cycle Asymmetrical Repeat Cycle Switch-On Asymmetrical Repeat Cycle Star-to-Delta	0.1 sec. to 999 hr.	8 amp @ 240V AC	250	3.5"	0.9"	2.9"	Android 4.4 or Later, iOS 14.5 or Later	LED Indicator	8491N11	000000

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


7-Day Timing Cycle 1 Circuit Controlled	7-Day Timing Cycle, 2 Circuits Controlled

Install these switches in a panel cutout. More precise than other time and day switches, they program on/off times for equipment down to the exact minute. The seven-day timing cycle can perform a different program each day of the week. All have an override to bypass the programmed on/off settings. A backup battery maintains the program during a power outage.

2 Circuits Controlled—Two-circuit switches can apply a different program to each circuit.

												For Panel Cutout
	No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage	Max. On/Off Cycles, per day	Min. Set Time, min.	Timing Adjustment Style	With Override	Switch Designation	Ht.	Wd.	Dp.	Ht.	Wd.	Wire Connection	Certification		Each
7-Day Timing Cycle—With Battery Backup



		1	15 amp @ 277V AC	12V AC/24V AC/24V DC	20	1	Push Button	Yes	SPDT	2.8"	2.8"	1.5"	2.63"	2.63"	Screw Terminal	UL Recognized Component, C-UL Recognized Component	71075K91	0000000


		1	15 amp @ 277V AC	120V AC/277V AC	20	1	Push Button	Yes	SPDT	2.8"	2.8"	1.5"	2.63"	2.63"	Screw Terminal	UL Recognized Component, C-UL Recognized Component	71075K111	000000
		2	15 amp @ 250V AC	120V AC/240V AC	20	1	Push Button	Yes	SPST-NO	2.8"	2.8"	2.2"	2.68"	2.68"	Screw Terminal	UL Recognized Component, CSA Certified	70395K81	000000