Heat Therapy Pump - The safest and most accurate localized heat therapy system available. Bright and easy-to-read display provides continuous real-time temperature readings. Digital controller uses proprietary software to manage users prescribed set-point temperature to within 1 degrees F. Three temperature safety limits guard against possibility of overheating and Hi Limit Switches can be tested without taking unit apart! Specifications: Set-point range: 75 degrees F (Off) to 107 degrees F, Set-point accuracy: .5 degrees F, Flow rate: 15gph, Reservoir: 50 oz (1,500 ml), Approvals: uL 2601, CSA C22.2 No. 601-1 1DF, Mercury free, Uses tap water