Ubiquiti UniFi UI-CS1Y is an annual subscription license which significantly enhances protection capabilities on UniFi Gateway devices powered by Proofpoint and Cloudflare. Expanded IPS/IDS threat signatures to 55,000+ Weekly signature updates Reduced false positives on signatures 50+ additional threat categories with targeted filtering options This license is compatible with all UniFi Gateway models with the exception of the EFG. We will send through your license key via email on completion of your purchase. For more information, please refer to our blog: Ubiquiti UniFi CyberSecure.