SolaHD SDU-B DIN Rail AC-DC Uninterruptible Power Supplies (UPS) combine an industry-leading compact design with a wide operating temperature range (0°C to +50°C), enhanced communication, and unique installation options. SolaHD SDU-B AC-DC UPS provides protection from damaging impulses and power interruptions. These power supplies also include easy-to-wire screw terminations for critical devices needing battery backup, such as computer-based control systems.