Door Bell Buttons | McMaster-Carr

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22 Products

Choosing an Electrical Switch

These familiar push-button switches mount to flat surfaces.

Switches rated IP65 are protected against dust and low-pressure jets of water.

For technical drawings and 3-D models, click on a part number.

									Housing
Style	Actuator Color	No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Industry Designation	Switching Current @ Voltage	Max. Voltage	Dia.	Ht.	Wd.	Dp.	Material	Color	Mounting Fasteners Included	Environmental Rating		Each
Metal Actuator with Screw Terminals
Round
A	Gold	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	2 1/2"	__	__	1 5/16"	Brass	Gold	Yes	IP65	00000000	000000
Plastic Actuator with Screw Terminals
Round
A	Black	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	1 3/4"	__	__	5/8"	Brass	Gold	Yes	__	0000000	00000
A	Black	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	2 1/4"	__	__	5/8"	Brass	Gold	Yes	__	0000000	00000
Rectangular
B	Black	2	1 Off (Normally Open)	Springs Back (Momentary)	4	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	__	4 3/4"	1 5/8"	3/4"	Brass	Gold	Yes	__	0000000	00000
C	Black	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	__	2 3/4"	1"	3/4"	Anodized Aluminum	Gold	Yes	__	0000000	00000
C	Black	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	__	2 3/4"	1"	3/4"	Anodized Aluminum	Gray	Yes	__	0000000	00000
D	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	__	2 3/4"	3/4"	5/8"	Plastic	Black	Yes	__	0000000	00000
D	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	__	2 3/4"	3/4"	5/8"	Plastic	Gold	Yes	__	0000000	00000
D	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	__	2 3/4"	3/4"	5/8"	Plastic	Gray	Yes	__	0000000	00000
D	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 30 V AC/30 V DC	30V AC 30V DC	__	2 3/4"	3/4"	5/8"	Plastic	White	Yes	__	0000000	00000
Plastic Actuator with Screw Terminals—Illuminated
Rectangular
C	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 16 V AC/16 V DC	16V DC 16V AC	__	2 3/4"	1"	3/4"	Anodized Aluminum	Gold	Yes	__	0000000	00000
C	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 16 V AC/16 V DC	16V DC 16V AC	__	2 3/4"	1"	3/4"	Anodized Aluminum	Gray	Yes	__	00000000	00000
D	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 16 V AC/16 V DC	16V DC 16V AC	__	2 3/4"	3/4"	5/8"	Plastic	Black	Yes	__	0000000	00000
D	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 16 V AC/16 V DC	16V DC 16V AC	__	2 3/4"	3/4"	5/8"	Plastic	Gold	Yes	__	0000000	00000
D	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 16 V AC/16 V DC	16V DC 16V AC	__	2 3/4"	3/4"	5/8"	Plastic	Gray	Yes	__	0000000	00000
D	White	1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	3 A @ 16 V AC/16 V DC	16V DC 16V AC	__	2 3/4"	3/4"	5/8"	Plastic	White	Yes	__	0000000	00000

Low-Voltage 16 mm Panel-Mount Push-Button Switches

Flush with Hex Nut

Projecting with Hex Nut

Projecting Snap-In

Operate low-voltage devices such as doorbells and buzzers. These switches actuate with a quick push. Install them in a standard panel cutout diameter.

For technical drawings and 3-D models, click on a part number.

Metal Base with Screw Terminals
No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Industry Designation	Actuator Color	Switching Current @ Voltage	Max. Voltage	Dia.	Dp. Behind Panel		Each
Flush with Hex Nut
1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	White	10 A @ 24 V AC, 2 A @ 24 V DC	48V AC 48V DC	3/4"	7/8"	00000000	000000
Projecting with Hex Nut
1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	White	10 A @ 24 V AC, 2 A @ 24 V DC	48V AC 48V DC	3/4"	15/16"	00000000	00000
1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	Black	10 A @ 24 V AC, 2 A @ 24 V DC	48V AC 48V DC	3/4"	15/16"	000000000	00000
Projecting Snap In
1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	White	3 A @ 30 V AC/30 V DC	30V AC 30V DC	3/4"	13/16"	00000000	0000
1	1 Off (Normally Open)	Springs Back (Momentary)	2	SPST-NO	Black	10 A @ 24 V AC, 2 A @ 24 V DC	48V AC 48V DC	3/4"	15/16"	000000000	00000

Low-Voltage 19 mm Panel-Mount Push-Button Switches

Operate low-voltage devices that require less than 48 volts, such as doorbells and buzzers. These switches have one input terminal and three output terminals to control up to three devices at once.

For technical drawings and 3-D models, click on a part number.

Metal Base with Screw Terminals
No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Industry Designation	Actuator Color	Switching Current @ Voltage	Max. Voltage	Dia.	Dp. Behind Panel		Each
Snap In
1	1 Off (Normally Open)	Springs Back (Momentary)	4	SPST-NO	Black	4 A @ 24 V AC, 1 A @ 24 V DC	48V AC 48V DC	1"	1 1/16"	00000000	000000

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Choosing an Electrical Switch

Doorbell-Style Push-Button Switches

Low-Voltage 16 mm Panel-Mount Push-Button Switches

Low-Voltage 19 mm Panel-Mount Push-Button Switches