Description: 【Upgraded】: Features advanced second generation encryption and decryption technology, offering selectable encryption/decryption modes and eight customizable encryption sequences for enhanced video transmission security 【Real Time Protection】: Encrypts analog video signals instantly to prevent unauthorized interception or tampering during transmission, while supporting seamless real time decryption for authorized users 【User Friendly】: Easily configure working modes and switch between encryption and decryption functions via PC software, with intuitive indicator lights (use flash for encryption mode, two flashes for decryption mode) and a multifunctional button for convenient operation 【Enhanced Hardware Design】: Incorporates an improved DAC chip package for easier production while maintaining consistent hardware interfaces 【Material】 :The Video Scrambler is made from PC construction ensures durability in various environments Size Chart: 3.7cmx3.7cmx1cm/1.46inchx1.46inchx0.39inch Package Includes: 1 Decryption/Decryption Module, 2 Cable or 1 Decryption/Decryption Module, 2 Cable, 1 USB to Serial Module Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.