This deal includes: 1 x Cotherm - P.I.L Smart Water Heating Control (Cotherm PIL) 1 x Cotherm - 14 Titanium Unvented Water Heater Immersion Element (ELE-14-TI-UNV) Cotherm P.I.L - the next big advance in environmentally friendly, smart water heating controls. Fit and forget - Once installed, the P.I.L will automatically predict the timing , temperature and quantity of hot water you will need. Save Money - Save a proven 15-20% on water heating bills with the Cotherm P.I.L Do your bit - Environmentally friendly - annual saving of up to 80kg of CO2 . Keeping you safe - Fully automatic anti-legionella cycle. The Cotherm P.I.L smart water heating control, uses powerful intelligent learning to accurately predict when you will need hot water, what temperature you will want it and how much heated water you will actually need. The perfect addition to any hot water cylinder in demand by a busy hotel or household. Life made simple! Ease of Installation: How to install your Cotherm P.I.L. The