Our VariPLUS® Power Converter and Variable Transformer is specifically designed to be a cleaner, safer, and more convenient option to traditional digital variac options. The VariPLUS allows manufacturers to fully comply with international safety agency standards during routine production line testing without the need to purchase an expensive AC power source. VariPLUS utilizes accurate digital metering, safe high speed shut down circuitry, and an easy-to-use interface. Simply put, the VariPLUS outperforms other Variable Transformers in every single aspect. The VariPLUS Power Converter and Variable Transformer includes the following model: 105.