Compatibility and compatibility notes - 42001-0107 and 42001-0107S transformer kit - Compatible with Pentair MasterTemp and Max-E-Therm pool and spa heaters - Also suitable for Sta-Rite pool and spa heater electrical systems Electrical specifications - Dual voltage input: 120 or 240 VAC - Output: 26 VAC - This kit provides a 26 VAC output for compatible heater systems Easy installation and usage - Designed for simple, hassle-free replacement - Tool-free installation in many setups - Important: before unplugging the old wires, check and note the heater wire connections to reconnect them correctly Reliable performance - Built to meet quality standards - Delivers reliable operation and efficient performance for your pool or spa heater Use scenarios - Scenario 1: Replacing a failed transformer in a Pentair MasterTemp or Max-E-Therm heater to restore heating - Scenario 2: Servicing a Sta-Rite pool or spa heater to ensure proper electrical supply and operation - Scenario 3: Installing in a dual-voltage setup that allows both 120 VAC and 240 VAC inputs for flexible wiring options Model details - Part numbers: 42001-0107 and 42001-0107S - 26 VAC output for compatible heater systems