The Stoneuk ST-AC105CB is a robust standalone access controller built with a metal, vandal-proof enclosure and rated IP66 waterproof, making it ideal for both indoor and outdoor installations. It supports up to 2,000 users with a single relay output and operates independently. The device reads 125 KHz EM cards, compatible with the Tuya mobile app via Bluetooth, allowing convenient local access management directly from a smartphone.