How to determine the quality of the car glass lift switch?

I. Appearance and Hand Feel Identification

Look at the material of the casing

High-quality: Fine matte finish, thick and hard, no burrs, not easy to be bent, made of PC + ABS raw materials

Low-quality: Light and flimsy, shiny surface, large gaps, soft texture, mostly recycled plastic

Press the buttons to feel

High-quality: Smooth and effortless when pressed, two-stage gears are clear, rebound is crisp without any jamming

Low-quality: Buttons are loose, hard and rough, rebound is weak, becomes soft when pressed all the way

Check the font transparency

High-quality: Laser-engraved font is clear, backlit is uniform and bright

Low-quality: Screen printing is prone to wear off, light transmission is dim, and light leakage is severe

II. Sealing and Waterproof Identification

Seams are tight and seamless, with rubber waterproof rings indicating high quality

Large gaps, no sealing ring, and easily loose when squeezed = low quality, prone to water ingress and damage

III. Open and Inspect the Interior (Most Accurate)

Conductive Structure

High-end good products: Black conductive silicone particles, silent and durable, long lifespan

Low-end inferior products: Bare copper contact points, prone to oxidation and blackening, short lifespan and failure

Contact Plating

High-quality: Gold/platinum plating, shiny and not prone to oxidation

Low-quality: Ordinary copper color, black and prone to rust Circuit board

High-quality: The board is thick and solid, the solder joints are full and the components are complete and neatly arranged.

Low-quality: The board is thin and flimsy, the solder joints are rough, and electronic components are deliberately omitted.

Spring rebound

High-quality: Stainless steel small spring, with sufficient elasticity and no deformation.

Low-quality: Ordinary iron spring, prone to become weak and collapse.

Four, Performance Testing

One-button lifting and lowering: The gears are distinct, the lifting and lowering response is sensitive and not delayed.

Multi-key synchronization: The main control controls the four doors without failure or delay.

Window locking function: The window locking key is sensitive, and the rear buttons immediately lose their effect.

Durability: After continuous and rapid pressing for a hundred times, the feel remains unchanged and does not lose its sensitivity.