Dotworkz has been deploying extreme housings in all corners of the world since 1998, and the feedback gained from clients in these areas goes straight into product designs. This allows Dotworkz to continue creating and updating high-quality products meant for long-term use. Mean Time Between Failures (MTBF): The predicted elapsed time between inherent failures of a system during operation, and Dotworkz integrated power components have been lab tested to meet or exceed MIL standard MIL-HDBK-217F (25°C) military testing standards for electronics or International Electrotechnical Commission (IEC) 61709 testing standards. The Dotworkz Heater Blower, Ring of Fire, and Tornado MVP models power supplies have been tested to 353,600 hours (40 years) minimum of continuous reliable service rating. The Dotworkz COOLDOME™ models power supplies have been tested to 238,900 hours (27 years) minimum of continuous reliable service rating.