We provide thermostatic baths with cold rolled steel shells, touch button temperature controls, and water sinks purified with electrolysis. They have three-digit temperature displays, thermal resistor sensors, and multi-section program control. Every model has automatic backup and retrieval in the event of a power outage, short-circuit protection, and an overheating alert. They include automated stop functions, deviation correction, and a menu key lock. Our thermostatic bathtubs have audible-visual alerts for added safety and convenience.