Coming from one of the short sides of the ThermoBar 140 ECO there is a two-metre long 24-volt low-voltage cable with a flat-pin plug to the transformer. The electrical current from the transformer to the ThermoBar is low, 24 volts, and completely safe. However, the current is quite high, 6-8 ampere. This means that you cannot use a really long low-voltage cable between the transformer and the tank. If you do, the voltage will be too low when it reaches the ThermoBar. This is why our low-voltage cable delivered with your ThermoBar is two metres but we have lengths up to 40 metres available which is the maximum length we recommend. NB! Avoid using a longer cable than you need as this will lead to a lower water temperature and higher energy use. From the transformer, a two-metre 230-volt cable has a plug that can be plugged into a regular power socket.   Everything you need is included in the price: 1 trough, 140 litres 1 low-voltage cable, 2 metres, 24 volt, with a flatpin plug. 1 transformer with a 2-metre cable, 230 volt, and a regular power plug. 1 strap, 350 cm 2 drain stoppers