Why Zinc Alloy Is the Best Material for Cabinet Locks
When choosing an electronic cabinet lock, the material matters more than most people think. Cheap plastic locks break easily, ordinary steel locks rust in humid environments. The SK-KS31E uses zinc alloy for a reason.

Zinc Alloy vs Plastic vs Steel
| Zinc Alloy | Plastic | Ordinary Steel | |
|---|---|---|---|
| Strength | High | Low | High |
| Rust resistance | Excellent | Excellent | Poor |
| Durability | Very high | Low | Medium |
| Best for | Gym / spa / pool / office | Low-use home | Dry indoor use |

Why Zinc Alloy Wins for Humid Environments
Spas, swimming pools, gym changing rooms — these places are humid. Ordinary steel locks develop rust stains within months, and plastic locks feel flimsy and break under daily use. Zinc alloy naturally resists corrosion while being strong enough for high-frequency commercial use.
- Anti-rust – no rust in steamy or humid environments.
- Strong – withstands daily high-frequency use.
- Premium feel – looks and feels better than plastic.

Dual Unlock: PIN + RFID Card
The SK-KS31E supports both PIN code and RFID card unlock. Users can choose whichever is faster for them. Gym members often prefer tapping their RFID wristband, while office staff prefer entering a PIN code. The master code lets administrators manage all user codes.

Specifications of the SK-KS31E
- Model: SK-KS31E
- Material: Zinc alloy
- Unlock methods: PIN code / RFID card
- Application: Storage room / Gym locker / Spa cabinet / Drawer / Wardrobe
- Features: Easy install / High security / Anti-rust / Durable
- Power: USB charging

Getting Started
As an OEM/ODM manufacturer, we supply RFID code cabinet locks with custom logo, packaging and card options for distributors and project buyers. Contact us for samples, bulk pricing or OEM/ODM customization.