KEYPAD SWITCH Keypad Switches 247

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Part RoHS Manufacturer Switch Type Mounting Feature Switch Function Type (Actuator) Contact Function Solderability AC Maximum Rating R Load (Contact) 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) Finish (Actuator) Washability 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 No. of Positions Maximum DC Contact Voltage Additional Features Maximum AC Contact Voltage JESD-609 Code Indexing Angle Terminal Length AC Maximum Power Rating R Load (Contact) Material (Actuator)

ADTSM644YV

Apem Components

KEYPAD SWITCH

SURFACE MOUNT-STRAIGHT

SPST

STEM

SILVER

BLACK

STAINLESS STEEL

BLACK

1

0 deg

250VAC

BRASS

100000 Cycle(s)

100000000 ohm

1X1

BAG; BULK

6.2 mm

6.2 inch

6.37 N

THERMOPLASTIC

SILVER

3.5 mm

.05A@12VDC

70 Cel

PHOSPHOR BRONZE

-25 Cel

.15 inch

Silver (Ag)

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

.254

PHOSPHOR BRONZE

12 V

e4

THERMOPLASTIC

MHPS4284N

Apem Components

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

4PDT

PUSHBUTTON

SILVER

1

500VAC

BRASS

10000 Cycle(s)

100000000 ohm

1X1

13 mm

8.5 inch

2.75 N

8.5 mm

.1A@30VDC

65 Cel

PHOSPHOR BRONZE

-20 Cel

.335 inch

Silver (Ag)

MOMENTARY

.1 A

SOLDER

100 mohm

30 V

e4

.138 inch

7914G-1-000

Bourns

KEYPAD SWITCH

SURFACE MOUNT-STRAIGHT

SPST

PUSHBUTTON

N.O.-N.C.

GOLD

STAINLESS STEEL

1

0 deg

250VAC

PHOSPHOR BRONZE

100000000 ohm

1X1

TUBE

5 mm

5 inch

0 inch

WATER PROOF

SNAP ACTION

3.92 N

THERMOPLASTIC

GOLD

2.54 mm

.1A@16VDC

125 Cel

.1 A

STAINLESS STEEL

-55 Cel

.057 inch

Nickel/Palladium/Gold (Ni/Pd/Au)

MOMENTARY

.1 A

SOLDER

100 mohm

0 inch

STAINLESS STEEL

16 V

CONSULT FACTORY

16 V

e4

SILICON RUBBER

7914H-1-032

Bourns

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PUSHBUTTON

N.O.-N.C.

GOLD

STAINLESS STEEL

1

0 deg

250VAC

PHOSPHOR BRONZE

100000000 ohm

1X1

TUBE

5 mm

5 inch

0 inch

WATER PROOF

SNAP ACTION

3.92 N

THERMOPLASTIC

GOLD

2.17 mm

.1A@16VDC

125 Cel

.1 A

STAINLESS STEEL

-55 Cel

.032 inch

Nickel/Palladium/Gold (Ni/Pd/Au)

MOMENTARY

.1 A

SOLDER

100 mohm

0 inch

STAINLESS STEEL

4

16 V

50 PCS/TUBE PACKAGING

16 V

e4

.157 inch

SILICON RUBBER

7914J-1-050

Bourns

KEYPAD SWITCH

SURFACE MOUNT-STRAIGHT

SPST

PUSHBUTTON

N.O.-N.C.

GOLD

STAINLESS STEEL

1

0 deg

250VAC

PHOSPHOR BRONZE

100000000 ohm

1X1

TUBE

5 mm

5 inch

0 inch

WATER PROOF

SNAP ACTION

3.92 N

THERMOPLASTIC

GOLD

2.54 mm

.1A@16VDC

125 Cel

.1 A

STAINLESS STEEL

-55 Cel

.102 inch

NICKEL PALLADIUM GOLD

MOMENTARY

.1 A

SOLDER

100 mohm

0 inch

STAINLESS STEEL

16 V

CONSULT FACTORY

16 V

e4

SILICON RUBBER

EVQP7J01K

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

EVQ9P701K

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

GOLD/SILVER

MOMENTARY

.05 A

SOLDER

EVQ9P7

12 V

e4

EVQP7A01K

Panasonic

KEYPAD SWITCH

SURFACE MOUNT-RIGHT ANGLE

SPST

PUSHBUTTON

BLACK

BLACK

1

0 deg

250VAC

100000 Cycle(s)

100000000 ohm

1X1

BOX; TAPE AND REEL

10 ms

3.5 mm

2.9 inch

MOLDED

SNAP ACTION

2.2 N

1.35 mm

.05A@12VDC

70 Cel

-20 Cel

.026 inch

MOMENTARY

.05 A

SOLDER

EVQP7

100 mohm

.2032

12 V

5000PCS/EMBOSSED TAPE/REEL PKG

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

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

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

B3M-6009

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

1

2000000 Cycle(s)

1X1

5 ms

6 mm

6 inch

.88 N

6.5 mm

.05A@12VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

12 V

B3S-1102P

Omron

KEYPAD SWITCH

SURFACE MOUNT-STRAIGHT

SPST

PLUNGER TYPE

ON-OFF

1

0 deg

500VAC

300000 Cycle(s)

100000000 ohm

1X1

TAPE AND REEL

5 ms

6.6 mm

6 inch

0 inch

IP67

BREAK-BEFORE-MAKE

2.26 N

3.5 mm

.05A@24VDC

70 Cel

-25 Cel

.026 inch

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

.254

24 V

EMBOSSED TAPE, GROUND TERMINAL

K5ATGN43GP

C & K Components

KEYPAD SWITCH

SURFACE MOUNT-STRAIGHT

SPST

GOLD OVER NICKEL

THERMOPLASTIC

1

100000 Cycle(s)

1VA@32VDC

GREEN LED

1000000000 ohm

1X1

TAPE AND REEL

10 ms

8.4 mm

8 inch

IP40

4 N

GOLD OVER NICKEL

4.85 mm

.1A@32VDC

125 Cel

-40 Cel

GOLD

MOMENTARY-TACTILE

.1 A

SOLDER

100 mohm

0.8

32 V

ROHS COMPLIANT, GREEN LED

e4

KSL0M912LFT

C & K Components

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

LONG HARD PLASTIC TYPE

WAVE

1

250VRMS

500000 Cycle(s)

1VA@32VDC

1000000000 ohm

1X1

BULK

1 ms

6.2 mm

6.2 inch

IP65

3 N

2.6 mm

.05A@32VDC

85 Cel

SILVER

-40 Cel

TIN

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

.6096

SILVER

4

32 V

e3

.138 inch

B3F-1060

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

FLAT PLUNGER TYPE

SILVER

BLACK

1

1000000 Cycle(s)

100000012 ohm

1X1

BAG; BULK

5 ms

6 mm

6 inch

1.27 N

SILVER

3.4 mm

.05A@24VDC

70 Cel

-25 Cel

Gold (Au)

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

e4

B3W-9000-B1B

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

BLUE LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-B1C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

BLUE LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-B2B

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

BLUE LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-B2C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

BLUE LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-B2N

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

BLUE LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-G1C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-G1G

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-G1N

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-G2C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-G2G

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-G2N

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-HG1C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-HG1G

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-HG1N

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-HG2C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-HG2G

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-HG2N

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-R1C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

RED LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-R1N

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

RED LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-R2C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

RED LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-R2N

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

RED LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-R2R

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

RED LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-RG2C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

GREEN AND RED LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-Y1C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

YELLOW LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-Y1N

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

YELLOW LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-Y1Y

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

YELLOW LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-Y2C

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

YELLOW LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-Y2N

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

YELLOW LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

24 V

B3W-9000-Y2Y

Omron

KEYPAD SWITCH

THROUGH HOLE-STRAIGHT

SPST

PLUNGER TYPE

1

1000000 Cycle(s)

YELLOW LED

100000000 ohm

1X1

BOX

5 ms

10 mm

10 inch

IP00

1.57 N

5.8 mm

.05A@24VDC

70 Cel

-25 Cel

MOMENTARY-TACTILE

.05 A

SOLDER

100 mohm

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.