1.2 Inches

COMPATIBILITY: This is * Firewalla RED * (NOT THE FIREWALLA BLUE), The IPS functionality is limited to 100 Mbits. This device may not be compatible with all routers. Please look at the "specification sheet" document in this listing, or compatibility guide in the manufacturing site for routers that works with Firewalla. May require login to router and do basic configuration. COMPLETE CYBERSECURITY PROTECTION - Firewalla's unique intrusion prevention system (IDS and IPS) protects all of your home wire and wireless internet of things devices from threats like viruses, malware, hackng, phishing, and unwanted data theft when you’re using public WiFi. It’s the simple and affordable solution for families, professionals and businesses. Let Firewalla’s built-in OpenVPN server keeps your device usage as secure as it is in your home. PARENTAL CONTROL AND FAMILY PROTECT - The days of pulling the power cord from the dusty old router are behind you; with just a few taps on the smartphone, you can see what they’re doing, cut off all access, or cut off only gaming or social networks. Turn on Family Protect to filter and block adult and malicious content, keep internet activities healthy and safe.