Capacitive Spring Touch Switch Module | Pro Tronix

Product Description

The Capacitive Spring Touch Switch Module is a versatile, solid-state touch interface sensor designed to replace traditional mechanical push buttons with a durable, touch-sensitive capacitive contact. Built around a spring-loaded metal coil antenna, this module detects small changes in capacitance caused by human finger touch, offering instant visual and electrical response.

The flexible helical spring acts as an extended capacitive sensing surface that can touch plastic, acrylic, glass, or ceramic overlay panels directly, allowing you to design sleek, fully sealed, water-resistant touch panels without drilling holes for physical buttons. Operating on a wide voltage supply of 2.7V to 6V DC, this module delivers a clean digital switching signal that connects directly to microcontrollers like Arduino, ESP32, STM32, and Raspberry Pi. It is an ideal component for smart home touch switches, concealed touch triggers, capacitive lamps, and modern industrial control interfaces.

⚠️ Enclosure Overlay Tip: The metal spring can be compressed slightly against the back of non-conductive overlay materials (like clear acrylic or glass up to 3mm thick). Avoid bringing metallic objects or unshielded wiring within close proximity to the spring coil, as this can alter baseline capacitance and trigger false touch inputs.

Technical & Interface Architecture

This capacitive touch module offers a clean breakout interface:

• Helical Spring Contact: Flexible metallic coil serving as an extended 3D touch antenna surface.

• Non-Contact Panel Integration: Triggers reliably through non-conductive overlays (glass, plastic, acrylic, wood).

• Digital Output Logic: Provides a clean high/low digital logic level when a touch event is detected.

• Pin Configuration: Standard 3-pin male header (VCC, GND, OUT).

Applications

• Concealed Touch Interfaces: Hiding touch controls behind glass or plastic enclosures for waterproof smart home panels.

• Capacitive Lamp Switches: Building touch-activated desk lamps, LED strip controllers, and dimmers.

• Mechanical Button Replacement: Upgrading physical microswitches in DIY electronics to wear-free solid-state touch controls.

Technical Specifications

What’s in the Box

• 1 x Capacitive Spring Touch Switch Module.

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