The Eff Eff Fritz Fuss 112----11440D11 is a robustly designed electric door opener for sliding doors, specifically conceived for outdoor use. It features a fail-locked configuration, meaning the door remains in the locked position in the event of a power failure or malfunction — an important safety feature for secured facilities. The device is universally applicable and compatible with various door systems, making it ideal for installations in commercial and industrial environments. The voltage range of 6–12 V AC/DC allows for flexible power supply, with current consumption at stabilized DC voltage being 102 mA. The zinc die-cast housing and zinc-plated surface ensure high corrosion resistance and durability, even under adverse weather conditions. The burglary resistance of 3000 N highlights the mechanical stability and security of the product.