SPST Keypad Switches 1,136

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Part	Manufacturer	Switch Type	Mounting Feature	Switch Function	Type (Actuator)	Contact Function	Solderability	Center Contact Plating	Color (Actuator)	Housing Material	Body Color	No. of Switches	Angle (Actuator)	Dielectric Withstand Volts (V)	Terminal Material	Electrical Life	DC Maximum Power Rating R Load (Contact)	Illumination	Insulation Resistance	Circuit Config	Packing Method	Maximum Contact Bounce Time	Body Length/Diameter	Body Width	Length (Bushing)	Sealing	Contact Timing	Maximum Operating Force	Insulator Material	End Contact Plating	Body Height	DC Maximum Rating R Load (Contact)	Maximum Operating Temperature	Maximum AC Contact Current	Center Contact Material	Minimum Operating Temperature	Length (Actuator)	Terminal Finish	Switch Action	Maximum DC Contact Current	Termination Type	Manufacturer Series	Contact Resistance	Diameter (Bushing)	Actuator Travel (mm)	End Contact Material	PCB Hole Count	Maximum DC Contact Voltage	Additional Features	JESD-609 Code	Terminal Length	Material (Actuator)
ATS2D3GNCLFG	C & K Components	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST			REFLOW					1		250VRMS			0.2VA@32VDC		1000000000 ohm	1X1	TR		6 mm	3.8 inch		IP54		2 N			1.65 mm	0.01A@32VDC	125 Cel		GOLD	-40 Cel			MOMENTARY	.01 A	SOLDER		350 mohm		1.1	GOLD		32 V
B3W-1000	Omron	KEYPAD SWITCH	THROUGH HOLE-STRAIGHT	SPST	FLAT TYPE	OFF-(ON)			WHITE			1	0 deg	500VAC		1000000 Cycle(s)			100000000 ohm	1X1	BAG	5 ms	6.6 mm	6 inch	0 inch	IP67	BREAK-BEFORE-MAKE	1.57 N			3.4 mm	.05A@24VDC	70 Cel			-25 Cel	.026 inch		MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm				4	24 V	BAG PACKAGING		.138 inch
B3W-1052	Omron	KEYPAD SWITCH	THROUGH HOLE-STRAIGHT	SPST	PROJECTED TYPE	OFF-(ON)			YELLOW			1	0 deg	500VAC		300000 Cycle(s)			100000000 ohm	1X1	BAG	5 ms	6.6 mm	6 inch	0 inch	IP67	BREAK-BEFORE-MAKE	2.26 N			3.4 mm	.05A@24VDC	70 Cel			-25 Cel	.144 inch		MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm				4	24 V	BAG PACKAGING		.138 inch
EVQPSD02K	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-RIGHT ANGLE	SPST	KNOB TYPE							1				100000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	6.1 mm	4 inch				2.3 N			1.8 mm	.05A@12VDC	70 Cel			-20 Cel		GOLD/SILVER	MOMENTARY	.05 A	SOLDER							12 V		e4
FSMRA7J	TE Connectivity	KEYPAD SWITCH	THROUGH HOLE-RIGHT ANGLE	SPST	ROUND/EXTENDED TYPE							1				100000 Cycle(s)				1X1	BULK		7.11 mm	6.29 inch				1.57 N			11.86 mm	.05A@12VDC	85 Cel			-20 Cel		Silver (Ag)	MOMENTARY-TACTILE	.05 A	SOLDER	FSMRAJ						12 V		e4
KMR221GULCLFS	C & K Components	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST			REFLOW					1		250VRMS		200000 Cycle(s)	1VA@32VDC		1000000000 ohm	1X1	TR, 13 INCH	3 ms	4.2 mm	2.8 inch		IP40		2.5 N			1.4 mm	0.05A@32VDC	85 Cel		SILVER	-40 Cel	.02 inch		MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm		.254	SILVER		32 V	ROHS COMPLIANT
PTS645SK432LFS	C & K Components	KEYPAD SWITCH	THROUGH HOLE-STRAIGHT	SPST	ROUND TYPE							1		250VAC		100000 Cycle(s)			100000000000 ohm	1X1	BULK		6 mm	6 inch				2.55 N			3.4544 mm	0.05A@12VDC	60 Cel			-20 Cel		SILVER	MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm				4	12 V		e4	.138 inch
PTS810SJS250SMTRLFS	C & K Components	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST			REFLOW		GRAY			1		250VAC		150000 Cycle(s)			100000000 ohm	1X1	TR, 13 INCH	10 ms	4.2 mm	3.2 inch				7.35 N			1.8 mm		85 Cel			-40 Cel	.028 inch	SILVER	MOMENTARY-TACTILE	.05 A	SOLDER		500 mohm		0.3			16 V		e4
TL3365AF180QG	E-switch	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST								1		250VAC		100000 Cycle(s)			100000000 ohm	1X1			4.2 mm	3.2 inch				1.76 N			1.55 mm	0.05A@12VDC	70 Cel		SILVER	-20 Cel			MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm		0.2	SILVER		12 V
1.14.001.503/0000	C & K Components	KEYBOARD	SURFACE MOUNT-STRAIGHT	SPST			REFLOW					1				1000000 Cycle(s)			1000000000 ohm	1X1	TAPE AND REEL	5 ms	12 mm	12 inch				4.3 N				.1A@42VDC	80 Cel		GOLD	-40 Cel			MOMENTARY	.1 A	SOLDER		100 mohm		0.61	GOLD		42 V
1825955-2	TE Connectivity	KEYPAD SWITCH	PANEL MOUNT	SPST				SILVER	BROWN	POLYAMIDE	BLACK	1				100000 Cycle(s)				1X1	BULK		5.99 mm	5.99 inch				.98 N			3.6 mm	.05A@24VDC	85 Cel	.05 A		-35 Cel	.028 inch		MOMENTARY	.05 A	SOLDER					COPPER ALLOY		24 V				POLYBUTYLENE TEREPHTHALATE
434111025826	Wurth Elektronik	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST	STEM		REFLOW	SILVER	WHITE	STAINLESS STEEL	BLACK	1		250VAC	COPPER ALLOY	30000 Cycle(s)			100000000 ohm	1X1	TAPE AND REEL	10 ms	6 mm	3.8 inch				3.24 N	LIQUID CRYSTAL POLYMER	SILVER	1.7 mm	.05A@12VDC	85 Cel		STAINLESS STEEL	-40 Cel	.031 inch		MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm		0.25	STAINLESS STEEL		12 V				LIQUID CRYSTAL POLYMER
5GSH9358222R	Apem Components	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST				SILVER		POLYPHENYLENE SULPHIDE		1			COPPER TIN ALLOY	10000000 Cycle(s)		RED/GREEN LED	10000000 ohm	1X1	TR, 13 INCH	2 ms	10 mm	10 inch		IP67		3.5 N	POLYPHENYLENE SULPHIDE	SILVER	8.5 mm	0.05A@24VDC	85 Cel		STAINLESS STEEL	-30 Cel			MOMENTARY-TACTILE	.05 A	SOLDER		30 mohm		1	COPPER TIN ALLOY		24 V	STANDARD: MIL-PRF-28855H			POLYPHENYLENE SULPHIDE
B3F-3152	Omron	KEYPAD SWITCH	THROUGH HOLE-RIGHT ANGLE	SPST	PROJECTED PLUNGER TYPE	OFF-(ON)		SILVER	YELLOW			1	90 deg	500VAC		300000 Cycle(s)			100000000 ohm	1X1	BAG; BULK	5 ms	7.3 mm	6.25 inch	0 inch		BREAK-BEFORE-MAKE	1.96 N		SILVER	7.4 mm	.05A@24VDC	70 Cel			-25 Cel	.134 inch	Gold (Au)	MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm				4	24 V	BAG PACKAGING,GROUND TERMINALS	e4	.138 inch
EVQP0N02B	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST								1				2000000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	6.5 mm	6 inch				.6 N			1.8 mm	.02A@15VDC	85 Cel			-40 Cel		GOLD/SILVER	MOMENTARY	.02 A	SOLDER	EVQP0						15 V		e4
EVQP7C01P	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST	PUSHBUTTON	ON-OFF						1		250VAC		10000 Cycle(s)			100000000 ohm	1X1	TR	10 ms	3.55 mm	3.5 inch			SNAP ACTION	2.2 N			1.35 mm	.05A@12VDC	70 Cel			-20 Cel			MOMENTARY		SNAP ON		100 mohm
EVQPVG05K	Panasonic	KEYPAD SWITCH	THROUGH HOLE-STRAIGHT	SPST								1				100000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	6.1 mm	6 inch				2 N			3.5 mm	.05A@12VDC	85 Cel			-30 Cel		GOLD/SILVER	MOMENTARY	.05 A	SOLDER	EVQPV						12 V		e4
EVQQ2F01W	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST		ON-OFF	REFLOW					1				1000000 Cycle(s)			100000000 ohm	1X1	BOX; TAPE AND REEL	10 ms	6.5 mm	6 inch			SNAP ACTION	1 N			1.8 mm	.02A@15VDC	85 Cel			-40 Cel		GOLD/SILVER	MOMENTARY	.02 A	SOLDER		100 mohm					15 V		e4
KMR231NGULCLFS	C & K Components	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST			REFLOW					1		250VRMS		150000 Cycle(s)	1VA@32VDC		1000000000 ohm	1X1	TR, 13 INCH	3 ms	4.2 mm	2.8 inch		IP40		3.75 N			1.4 mm	.05A@32VDC	85 Cel		SILVER	-40 Cel	.02 inch	SILVER	MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm		.254	SILVER		32 V	ROHS COMPLIANT	e4
KSC641JLFS	ITT Cannon	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST	HARD TYPE			SILVER				1				300000 Cycle(s)	1VA@32VDC		1000000000 ohm	1X1	TAPE AND REEL	1 ms	6.2 mm	6.2 inch		IP67		3 N		SILVER	2.5 mm	.05A@32VDC	85 Cel		SILVER	-40 Cel		Silver (Ag)	MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm			SILVER		32 V		e4
MSLPT5252CL2WTR	TE Connectivity	KEYPAD SWITCH	PANEL MOUNT	SPST				SILVER	WHITE	POLYETHYLENE	BLACK										TR							.98 N					70 Cel	.05 A		-25 Cel				.05 A	SOLDER					STAINLESS STEEL						POLYETHYLENE
SKHHBVA010	Alps Alpine	KEYPAD SWITCH	THROUGH HOLE-STRAIGHT	SPST	STEM				BLACK			1		250VAC		1000000 Cycle(s)			100000000 ohm	1X1	BOX; BULK		6 mm	6 inch				.98 N			3.5 mm	0.05A@12VDC	90 Cel			-40 Cel			MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm		0.25		4	12 V	TACT SWITCH		.138 inch
1301.9315	Schurter Ag	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST		OFF-(ON)	REFLOW					1			BRASS	100000 Cycle(s)				1X1	BOX	.1 ms	6 mm	6 inch	0 inch	IP40		2.1 N			3.6 mm	.05A@12VDC	70 Cel			-20 Cel	.055 inch		MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm	0 inch				12 V	LOOSE IN BOXES PACKAGING
B3F-4005	Omron	KEYPAD SWITCH	THROUGH HOLE-STRAIGHT	SPST	FLAT PLUNGER TYPE	OFF-(ON)		SILVER	YELLOW			1	0 deg	500VAC		1000000 Cycle(s)			100000000 ohm	1X1	BAG; BULK	5 ms	12 mm	12 inch	0 inch		BREAK-BEFORE-MAKE	3.24 N		SILVER	3.5 mm	.05A@24VDC	70 Cel			-25 Cel		Gold (Au)	MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm				6	24 V	BAG PACKAGING	e4	.138 inch
B3W-1102	Omron	KEYPAD SWITCH	THROUGH HOLE-STRAIGHT	SPST	FLAT TYPE	OFF-(ON)			YELLOW			1	0 deg	500VAC		300000 Cycle(s)			100000000 ohm	1X1	BAG	5 ms	6.6 mm	6 inch	0 inch	IP67	BREAK-BEFORE-MAKE	2.26 N			3.4 mm	.05A@24VDC	70 Cel			-25 Cel	.026 inch		MOMENTARY-TACTILE	.05 A	SOLDER	B3W	100 mohm				5	24 V	BAG PACK.,GROUND TERMINALS		.138 inch
EVQP6DB35	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST								1				1000000 Cycle(s)				1X1	BOX; TAPE AND REEL	8 ms	4.1 mm	4.1 inch		DUST PROOF		1.6 N			.35 mm	.02A@15VDC	70 Cel			-20 Cel		GOLD/SILVER	MOMENTARY	.02 A	SOLDER	EVQP6						15 V		e4
EVQP6YB55	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST								1				500000 Cycle(s)				1X1	BOX; TAPE AND REEL	8 ms	4.1 mm	4.1 inch		DUST PROOF		2.4 N			.43 mm	.02A@15VDC	70 Cel			-20 Cel			MOMENTARY	.02 A	SOLDER	EVQP6						15 V		e4
EVQQ2M03W	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST		ON-OFF	REFLOW					1				1000000 Cycle(s)			100000000 ohm	1X1	BOX; TAPE AND REEL	10 ms	6.5 mm	6 inch			SNAP ACTION	1.3 N			1.8 mm	.02A@15VDC	85 Cel			-40 Cel		GOLD/SILVER	MOMENTARY	.02 A	SOLDER		100 mohm					15 V		e4
PTS636SP50LFS	C & K Components	KEYPAD SWITCH	THROUGH HOLE-STRAIGHT	SPST			REFLOW		BLACK			1		250VAC		20000 Cycle(s)			100000000 ohm	1X1	BAG	10 ms	6 mm	3.5 inch		IP40		3.63 N			3.3 mm	0.05A@12VDC	90 Cel			-40 Cel			MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm		0.3		2	12 V			.154 inch
PTS645VM13SMTR92LFS	C & K Components	KEYPAD SWITCH	SURFACE MOUNT-RIGHT ANGLE	SPST			REFLOW					1		100VAC		100000 Cycle(s)			100000000 ohm	1X1	TR, 13 INCH	10 ms	7.112 mm	7.0104 inch				2.06 N			6.6 mm	0.05A@12VDC	70 Cel			-20 Cel	.05 inch	SILVER	MOMENTARY	.05 A	SOLDER		100 mohm		.254			12 V		e4
PTS840ESDGKPSMTRLFS	C & K Components	KEYPAD SWITCH	SURFACE MOUNT-RIGHT ANGLE	SPST			REFLOW					1		250VAC		100000 Cycle(s)			100000000 ohm	1X1	TR, 13 INCH	10 ms	3.55 mm	3.5 inch				2.94 N			1.35 mm		85 Cel			-40 Cel		SILVER	MOMENTARY-TACTILE	.05 A	SOLDER		500 mohm		0.3			12 V		e4
TL1105RF160Q94VO	E-switch	KEYPAD SWITCH	THROUGH HOLE-RIGHT ANGLE	SPST				SILVER				1		250VAC	BRASS	100000 Cycle(s)			100000000 ohm	1X1			7.1 mm					2.06 N		SILVER	6.5 mm	0.05A@12VDC	70 Cel			-20 Cel	.269 inch		MOMENTARY-TACTILE	.05 A	SOLDER		50 mohm		0.25		4	12 V			.138 inch
1301.9314	Schurter Ag	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST		OFF-(ON)	REFLOW					1			BRASS	100000 Cycle(s)				1X1	BOX	.1 ms	6 mm	6 inch	0 inch	IP40		2.1 N			3.6 mm	.05A@12VDC	70 Cel			-20 Cel	.028 inch		MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm	0 inch				12 V	LOOSE IN BOXES PACKAGING
KSC351GLFS	ITT Cannon	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST	HARD TYPE			SILVER				1					1VA@32VDC		1000000000 ohm	1X1	TAPE AND REEL	1 ms	6.2 mm	6.2 inch		IP67		5.5 N		SILVER	2.6 mm	.05A@32VDC	85 Cel		SILVER	-40 Cel		Silver (Ag)	MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm			SILVER		32 V		e4
PTS647SN38SMTR2LFS	C & K Components	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST								1		250VAC		100000 Cycle(s)			100000000 ohm	1X1	TR, 13 INCH		4.5 mm	4.5 inch				1.47 N			2.9 mm	0.05A@12VDC	70 Cel			-20 Cel			MOMENTARY-TACTILE	.05 A	SOLDER		100 mohm		0.25			12 V
3.14.100.001/0000	Rafi & Kg	KEYBOARD	THROUGH HOLE-STRAIGHT	SPST	KEYPAD							1				1000000 Cycle(s)			1000000000 ohm	1X1			15 mm	15 inch			SNAP ACTION	3.5 N			9 mm	.1A@35VDC	70 Cel			-25 Cel			MOMENTARY	.1 A	SOLDER		100 mohm		.508			35 V	PANEL MOUNTABLE
5GTH935+1SS0910.4	Apem Components	KEYPAD SWITCH	THROUGH HOLE-STRAIGHT	SPST						PPS		1				10000000 Cycle(s)			10000000 ohm	1X1		.5 ms	10.1 mm	10.1 inch		IP67		3.5 N			6.4 mm	0.05A@24VDC	160 Cel			-40 Cel			MOMENTARY	.05 A	SOLDER		30 mohm					24 V				PPS
EVQP7B01K	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-RIGHT ANGLE	SPST								1				100000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	3.5 mm	2.9 inch				2.2 N			1.35 mm	.05A@12VDC	70 Cel			-20 Cel			MOMENTARY	.05 A	SOLDER	EVQP7						12 V
EVQP7C01K	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-RIGHT ANGLE	SPST								1				100000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	3.5 mm	2.9 inch				2.2 N			1.35 mm	.05A@12VDC	70 Cel			-20 Cel			MOMENTARY	.05 A	SOLDER	EVQP7						12 V
EVQP7D01K	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-RIGHT ANGLE	SPST								1				100000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	3.5 mm	2.9 inch				2.2 N			1.35 mm	.05A@12VDC	70 Cel			-20 Cel			MOMENTARY	.05 A	SOLDER	EVQP7						12 V
EVQP7K01K	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-RIGHT ANGLE	SPST								1				100000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	3.5 mm	2.9 inch				1.6 N			1.35 mm	.05A@12VDC	70 Cel			-20 Cel			MOMENTARY	.05 A	SOLDER	EVQP7						12 V
EVQP7L01K	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-RIGHT ANGLE	SPST								1				100000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	3.5 mm	2.9 inch				1.6 N			1.35 mm	.05A@12VDC	70 Cel			-20 Cel			MOMENTARY	.05 A	SOLDER	EVQP7						12 V
EVQP7M01K	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-RIGHT ANGLE	SPST								1				100000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	3.5 mm	2.9 inch				1.6 N			1.35 mm	.05A@12VDC	70 Cel			-20 Cel			MOMENTARY	.05 A	SOLDER	EVQP7						12 V
EVQPQMB55	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST								1				50000 Cycle(s)				1X1	BOX; TAPE AND REEL	10 ms	4.5 mm	4.5 inch				3 N			.45 mm	.02A@15VDC	70 Cel			-20 Cel		GOLD/SILVER	MOMENTARY	.02 A	SOLDER							15 V		e4
EVQQ2P01W	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST		ON-OFF	REFLOW					1				1000000 Cycle(s)			100000000 ohm	1X1	BOX; TAPE AND REEL	10 ms	6.5 mm	6 inch			SNAP ACTION	1.6 N			1.8 mm	.02A@15VDC	85 Cel			-40 Cel		GOLD/SILVER	MOMENTARY	.02 A	SOLDER		100 mohm					15 V		e4
EVQQ2S03W	Panasonic	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST		ON-OFF	REFLOW					1				1000000 Cycle(s)			100000000 ohm	1X1	BOX; TAPE AND REEL	10 ms	6.5 mm	6 inch			SNAP ACTION	1.6 N			1.8 mm	.02A@15VDC	85 Cel			-40 Cel		GOLD/SILVER	MOMENTARY	.02 A	SOLDER		100 mohm					15 V		e4
KT11P3JM34LFS	ITT Cannon	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST	HARD TYPE							1				100000 Cycle(s)				1X1	TAPE AND REEL					IP57		3 N				.031A@32VDC	90 Cel			-40 Cel		SILVER	MOMENTARY-TACTILE	.031 A	SOLDER	KT						32 V		e4
RA3CSH9	Apem Components	KEYPAD SWITCH	SURFACE MOUNT-STRAIGHT	SPST								1				10000000 Cycle(s)				1X1		2 ms	14 mm			IP67; MOISTURE PROOF		3 N			6.4 mm	.05A@24VDC	160 Cel			-40 Cel			MOMENTARY	.05 A	SOLDER	3C						24 V

Keypad Switches

Keypad switches are electronic switches that use a matrix of buttons or keys to input data or control functions. They are commonly used in consumer electronics, industrial control systems, and medical devices.

Keypad switches typically consist of a set of buttons or keys arranged in a matrix pattern, which are connected to a printed circuit board (PCB). When a button or key is pressed, it completes a circuit on the PCB, sending a signal to a microcontroller or other control system.

Keypad switches come in different configurations, including membrane keypads, elastomeric keypads, and mechanical keypads. Membrane keypads use a thin, flexible membrane to activate the switch, while elastomeric keypads use a rubber or silicone dome to provide tactile feedback. Mechanical keypads use a physical switch mechanism, similar to a keyboard.