do have a 19mm momentary switch normally closed

Sorry, you mean a 19mm button switch could be closed when you press it? If yes, you can search the asin "B07ZGH7Q37", thank you.

How far do you have to press the button before the switch activates? ie; does it activate when flush?

When the finger presses the button, the switch opens, when the finger release button, the switch automatically reset, switch off. Note: These switches come with a rubber O-ring which makes them splash resistant but they can NOT be submerged underwater.

will this work with 48 volt dc 2 amps?

I would say yes, I use them at 110 volts ac, and 7 amps

What size are the mounting threads?

Please check the below size before purchase: Operation Area: 15mm Mounting Hole: 19mm Head Diameter: 22mm

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Linkstyle 19mm Momentary Push Button Switch, 12V Waterproof SPST Metal Switch with Blue LED Light for Car Marine Boat, 5Pcs

Linkstyle 19mm Momentary Push Button Switch, 12V Waterproof SPST Metal Switch with Blue LED Light for Car Marine Boat, 5Pcs

Product ID: 245382179

Details

Brand
Linkstyle
Circuit Type
1-way
Connector Type
Screw
Contact Type
Normally Open
Current Rating
3 Amps
Material
Metal

💧IP65 waterproof for marine/outdoor use

🔩Durable stainless steel, 500K+ cycles

🔵Blue LED indicator for clear status

Description

🔘 Elevate your control game with Linkstyle’s sleek, marine-ready push button switch!

BUILT TO ENDURE - Robust stainless steel construction resists rust and wear, boasting up to 500,000 mechanical cycles.
VIBRANT BLUE LED RING - Customizable LED lighting that stays on or only when active, enhancing visibility and style.
MARINE GRADE WATERPROOF - IP65 rating ensures reliable performance in wet, harsh environments—ideal for boats and outdoor vehicles.
PRECISION MOMENTARY CONTROL - Push & hold to activate, release to instantly deactivate—perfect for responsive power management.
VERSATILE 12 V 24 V COMPATIBILITY - Seamlessly integrates with cars, boats, and motorized devices for critical lighting and power control.

The Linkstyle 19mm Momentary Push Button Switch is a premium, stainless steel, waterproof switch designed for 12V/24V motorized vehicles and marine applications. Featuring a bright blue LED indicator, IP65 waterproof rating, and a lifespan exceeding 500,000 cycles, it offers durable, responsive on/off control with easy panel mounting. Perfect for professionals seeking reliable, stylish power activation in demanding environments.

Specifications

ASIN	B08L13JG8M
Actuator Type	push button switch
Best Sellers Rank	#396,369 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,779 in Pushbutton Switches
Brand Name	Linkstyle
Circuit Type	1-way
Color	Blue Light
Compatible Devices	All devices that require a switch to control power
Compatible with Vehicle Type	Car, Boat, Other Motorized Vehicles
Connectivity Protocol	X-10
Connector Type	Screw
Contact Material	Stainless Steel
Contact Type	Normally Open
Control Method	Touch
Control Type	Basic On/Off
Controller Type	Push Button
Current Rating	3 Amps
Customer Reviews	4.3 4.3 out of 5 stars (101)
EU Spare Part Availability Duration	3 Years
International Protection Rating	IP65
Manufacturer	Linkstyle
Material Type	Metal
Mounting Type	Panel Mount
Number of Items	5
Number of Positions	1
Operating Voltage	250 Volts
Operation Mode	ON-OFF
Part Number	A090490-L001950722FBA
Specification Met	Ul, Ip65, Ik08
Switch Type	Push Button
Terminal	Button,marine
Unit Count	5 Count
Wattage	750 watts

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