✅ Universal retrofit solution for hot water cylinders; effortless assembly for professionals or DIY installers. Component separation enables easy swap-outs and scheduled upgrade. Compatible with leading appliances. Featuring water heater resistance kit plus integrated boiler resistor for seamless operation. ✅ Optimised for vertical or horizontal electric tanks in 50 L, 80 L, 100 L, 150 L or 200 L capacities. Doubles as auxiliary heating in solar units, suitable with household and industrial boilers when paired with automatic temperature control. Guarantees even distribution of warmth and elevated efficiency. Includes immersion heater element alongside water heater spare element. ✅ Crafted under CE quality protocols, every module ensures peak reliability and longevity. Spotlight on corrosion defence: sacrificial magnesium anode preserves tank integrity by neutralising aggressive deposits, extending service lifespan. ✅ Contents: 275×48 mm flange-mounted 1500W heating element; 250×22 mm magnesium anode; high-grade rubber gasket for flange seal; precision screw for element clamping. Mandatory pre-fill requirement: ensure full submersion before energising., Manufacturer: DOJA Barcelona