List of pertinent keywords for 'heated horse water': - heated water troughs - horses - livestock - outdoor use - indoor use - withstand extremely cold conditions - constant access to drinkable water - durable materials - minimal electricity usage - freezing temperatures - thermostat - energy efficiency - heating foil - output of 100W - water temperature - frost-free - temperatures as low as minus 20-30°C - placement - wind - degree of filling - 230V outlet - transformer not required - cable not required - CE marked - compliance with international safety standards - food-approved HDPE plastic - high wear resistance - impact resistance - used outdoors - used in un-insulated stables - risk of frost - other seasons - strap - fixation to a fence post