Hayward IDXL2TRF1930 Transformer 120/240 Volt to 24 Volt in AC Transformer Compatible with Select Hayward Heaters IDXL2TRF1930 Transformer Replacement Fit for Universal H-Series, Low NOx Heaters, Pool & Spa Systems H150FDN, H400FDP, H250IDL2 & More | 120V/240V to 24V AC Replacement for Hayward IDXL2TRF1930 Transformer | 120V/240V to 24V AC | Compatible w/ Universal H-Series, Low NOx Heaters, Pool & Spa Systems (H150FDN, H400FDP, H250IDL2 & More) COMPATIBLE HEATER MODELS: Universal H-Series (H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP), H-Series Low NOx (H200FDP, H300FDN, H400FDP), Pool/Spa (H250IDL2, H350IDL2, H400IDL2, C_PAHEAT). Confirm compatibility before purchase. 4-LAYER PROTECTION & DURABILITY: Voltage + current + temperature + overload safeguards. Made of pure copper coils, corrosion-resistant metal housing & high-insulation materials to ensure reliable conductivity, reduces heat buildup. Rigorous testing to ensure the long-term reliability and performance of your pool and spa heater. DUAL VOLTAGE INPUT: 120V/240V to 24V AC, delivers stable, efficient power conversion to optimize heater performance, reduces energy waste, and provides safe and efficient operation. EASY DIY INSTALLATION: Direct replacement for IDXL2TRF1930 transformers, plug and play. 12-inch leads for hassle-free replacement. Ideal for DIYers & prosno rewiring needed!