Custom Digital Waterproof 125kHz Rewritable T5577 Sticker Coin Coil ID Card

High-frequency 125kHz T5577 chip ensures reliable performance for access control and identification systems. Waterproof PVC material with reinforced coating protects against moisture, dust, and daily wear. Compact coin-sized design (25mm diameter) integrates seamlessly into keychains, cards, or embedded surfaces.

Rewritable memory allows unlimited programming for flexible use in hotels, offices, gyms, or parking systems. Precision-wound copper coil guarantees stable signal transmission up to 10cm read range. Compatible with most 125kHz RFID readers for instant plug-and-play functionality.

Industrial-grade adhesive backing enables permanent installation on metal/plastic surfaces. Ideal for replacing lost keys, inventory tagging, or DIY security projects. Sold in bulk quantities with wholesale pricing for large-scale deployments.