Overview Meet the LOBIUTIYA 77707-0010 Thermal Regulator Kit, a replacement component designed to restore steadier water temperatures in pools and spas. Built to fit a range of MasterTemp and Sta-Rite heaters, this regulator emphasizes consistent control and durable performance in outdoor environments. Precise temperature control The regulator is rated to open at 120°F, helping you aim for a comfortable, enjoyable water temperature with less fluctuation. This target supports a steady swimming experience across typical seasonal changes. Addressing thermostat issues If your original thermostat has become unreliable, you may notice temperature swings or uneven heating. Replacing with this regulator can promote more stable operation within a broad range, reducing the risk of overheating or overcooling. Compatibility and ease of use Designed for broad compatibility, the kit works with MasterTemp 400, 250, 125, 200, 300, and 333 models as well as Sta-Rite SR200, SR333, and SR400 pool and spa heaters. Installation is straightforward for compatible systems. Durable materials Constructed from corrosion-resistant materials, the regulator is built to withstand outdoor conditions and regular use, contributing to a longer service life. What you get and support Along with the regulator kit, you gain access to dependable customer support to help with questions and a smooth setup experience. Key benefits Precise temperature control with reliable open at 120°F behavior Stable performance across a typical range to support comfort Broad compatibility with MasterTemp and Sta-Rite heaters Durable, corrosion-resistant construction for longevity What’s included Replacement 77707-0010/38000-0007S thermal regulator kit Clear labeling and straightforward guidance Responsive customer support for installation questions Note: This description emphasizes possibilities and typical outcomes rather than guarantees. Always verify compatibility with your equipment before purchase. FAQ Q: What heaters is the 77707-0010 Thermal Regulator compatible with? A: Fits MasterTemp 400, 250, 125, 200, 300, 333 and Sta-Rite SR200, SR333, SR400 heaters. Q: Is installation straightforward? A: Yes, designed for simple replacement with standard connections and clear labeling; verify compatibility before use.