Momentary Push Button Switch 19mm Ultra-thin Switch IP67 Waterproof 4-Pin LED Stainless Steel | FILN

Button Switch DrawingPRODUCT OVERVIEW

The momentary push button switches (Model: FLM19-FJ-4-E) are high-precision industrial components featuring a 19mm mounting hole and an ultra-thin 4-pin structure. Manufactured by FILN, these switches are designed for narrow space installations where compact reliability is paramount. With an upgraded IP67 waterproof rating and certifications including ISO9001, CE, VDE, RoHS, SGS, UL, they are ideal for industrial control panels, CNC machinery, and medical devices. The switch features a momentary (self-resetting) 1NO function with a short 0.5mm stroke and a 6N operating force, providing a distinct tactile response. Available in 304 stainless steel, nickel-plated brass, or black anodized aluminum, these switches ensure long-lasting performance in demanding environments.

QUICK SPECIFICATIONS

Model Number	FLM19-F/HJ-4 Series
Mounting Diameter	19mm (0.75 inch)
Switch Function	Momentary (1NO / Self-resetting)
LED Color Options	Red, Yellow, Blue, Green, White (Single Color)
Terminal Type	4-Pin Solder Pin (Ultra-thin)
Switch Stroke / Force	0.5mm / 6N Operating Force

ELECTRICAL PERFORMANCE

Rated Electrical Parameters	AC 12V / 50mA
Contact Resistance	≤ 50mΩ (Initial)
Insulation Resistance	≥ 1000MΩ (at 500VDC)
Dielectric Strength (Terminal-Terminal)	1500V AC, 5mA, 60S
Dielectric Strength (Terminal-Shell)	1800V AC, 5mA, 60S (No breakdown)
LED Voltage	3V - 220V (12-24V / 110-220V Customizable)

COMPONENT MATERIALS

Switch Actuator	304 Stainless Steel / Aluminum Alloy / PC Plastic
Sleeve / Housing	304 Stainless Steel / Nickel-plated Brass / Black Aluminum
Button Pins	H62 Copper Alloy (Silver Plated)
Base Material	PA66+GF20% Flame Retardant Nylon
Contacts	Silver Alloy (AgCdO12)
Waterproof Seal	Silicone (SIL)

ENVIRONMENTAL & LIFE CYCLE

Operating / Storage Temp	-25°C to +85°C
Protection Level	IP67 Waterproof / IK08 Impact Resistance
Mechanical Life	100,000 Cycles
Electrical Life	50,000 Cycles (at AC 12V/50mA)
Nut Torque	5 - 10 N.m

KEY FEATURES & BENEFITS

• Upgraded IP67 Protection: Enhanced sealing ensures the switch remains operational even under temporary immersion in water, far exceeding standard IP40/IP65 ratings.
• Ultra-Thin Panel Solution: Designed specifically for space-constrained control panels. Its short body and 4-pin configuration maximize rear-panel clearance.
• High Precision Feedback: With a 0.5mm stroke and 6N operating force, it provides an immediate and precise tactile signal for industrial automation.
• Rugged Material Selection: Choose from 304 Stainless Steel for food/medical grade hygiene, or Black Anodized Aluminum for a sleek, industrial look.
• Superior Electrical Safety: Tested for dielectric strength up to 1800V AC, ensuring safety against voltage spikes in industrial circuits.

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LED COLOR SPECIFICATIONS

Our single-color LED rings provide critical visual communication for industrial operators:

• RED: Stop / Error / Emergency Warning.
• YELLOW: Standby / Caution / Heat Cycle.
• BLUE: Information / System Ready / Reset.
• GREEN: Start / Safe Operation / Running.
• WHITE: Power Supply Active / General Illumination.

PIN VS. SCREW VS. PRE-WIRED

Terminal Type	Best Use Case	Lifespan & Reliability
4-Pin Solder (This Model)	Ultra-compact panels; PCB integration.	High (Stable permanent connection).
Screw Terminal	Field maintenance; no special tools.	Medium (Screws may loosen over time).
Pre-Wired / Connector	Mass production; rapid assembly.	Very High (Factory sealed).

APPLICATIONS

The ip67 waterproof metal push button is designed for versatility across multiple sectors:

• Industrial: PLC Control Panels, CNC Lathes, Automation Hubs.
• Infrastructure: Public kiosks, Elevators, Outdoor Security.
• Marine: Boat dashboards, Winch controls, Navigation systems.
• Medical: Lab equipment, Sterilizers, Diagnostic devices.

INSTALLATION GUIDE

1. Panel Cut-out: Create a 19mm circular opening on your panel.
2. Switch Placement: Insert the metal button from the front of the panel.
3. Hardware Order: Slide the rubber seal onto the button from the back, followed by the metal nut.
4. Tightening: Tighten the hex nut (Torque 5-10 N.m) to ensure the waterproof seal is compressed.
5. Wiring: Solder wires to the 4 pins or use a dedicated FILN wiring harness.

4 Pin Push Button Switch Wiring Diagram

A 4-PIN switch consists of two parts: Switch Contacts (to control the device) and LED Terminals (marked with + and -). Below are two ways to wire the LED indicator.

• Horizontal Pins: The switch mechanism (Power In / Load Out).
• Vertical Pins (+ / -): The LED indicator light terminals.

Method 1: LED Synchronized with Device (On when Active)

Logic: The button light only turns ON when the device is running. It serves as a "Status Indicator."

• Wiring: Connect LED (+) to the Output side of the switch. LED (-) to Power Negative.
• Applications: Power start buttons, car fog lights, industrial machinery.
• Benefit: Saves power; provides visual feedback that the system is active.

Figure 1: LED turns ON only when button is pressed

Method 2: LED Always ON (Backlight Mode)

Logic: The button light stays ON constantly as long as there is power, regardless of the button position.

• Wiring: Connect LED (+) directly to the Power Positive. LED (-) to Power Negative.
• Applications: Dark environments, hallway switches, standby power indicators.
• Benefit: Allows you to find the switch easily in total darkness.

Figure 2: LED stays ON constantly (Backlight)

Mode	LED Status (Idle)	LED Status (Pressed)
Sync (Status)	OFF	ON
Always ON (Backlight)	ON	ON

INDUSTRY KNOWLEDGE

Understanding Momentary 1NO Function

A momentary push button switch with 1NO (Normally Open) logic is the "active-only" workhorse of the industry. The circuit is open by default. Upon pressing, the contacts close and trigger the signal. Because of the ultra-thin design, this model is preferred for space-constrained HMI (Human Machine Interface) designs where every millimeter counts.

Latching vs. Momentary Comparison

Switch Action	Mechanical Behavior	Application
Momentary (This Model)	Springs back instantly.	Start switches, signaling, doorbells.
Latching	Stays depressed until pressed again.	Master power controls, light switches.

FACTORY DIRECT SUPPLY - FILN

• ✅ Zero MOQ: Support for prototyping and small batches.
• ✅ Global Compliance: CE, UL, RoHS, and ISO9001 certified.
• ✅ Fast Shipping: Optimized logistics for worldwide delivery.
• ✅ Customization: Voltage, wire harness, and materials tailored to you.

REQUEST FREE SAMPLE

Official Site: www.filn.com
Email: [email protected]

FREQUENTLY ASKED QUESTIONS

1. Does this 19mm momentary switch support 220V?
Yes, while the rating is AC12V/50mA for standard signaling, the dielectric strength supports up to 1800V, and we offer 220V LED versions.

2. What is the difference between IP65 and this IP67 version?
IP65 is protected against water jets, while IP67 allows the switch to withstand temporary submersion, making it superior for heavy-washdown or outdoor use.

3. Is the 4-pin design compatible with standard wire connectors?
Yes, the pins are designed for 2.8mm solder terminals or direct soldering for a compact footprint.

4. Can I customize the black anodized color?
Yes, FILN offers stainless steel, black aluminum, and nickel-plated brass finishes to match your equipment's aesthetic.

5. What is the mechanical lifespan of the 19mm metal button?
It is rated for 100,000 mechanical cycles, ensuring decades of reliable use in standard industrial applications.

6. Does the ring light require a resistor?
Our LEDs come with built-in metal film resistors for your specified voltage (12V, 24V, 110V, etc.), so you can wire them directly.

7. How thick of a panel can I mount this on?
The 19mm threaded body typically accommodates panel thicknesses up to 10-12mm.

8. Is this switch 1NO or 1NC?
The standard FLM19-FJ series is a 1NO (Normally Open) momentary switch.

9. Can you provide a pre-wired harness for this 4-pin switch?
Yes, as a factory, we can supply any length of wire with custom connectors attached to the pins.

10. Is there a warranty for these buttons?
Yes, all FILN products are covered under a standard industrial warranty against manufacturing defects.