The TOTO TELC105R-D10E Ecopower On-Demand Water Supply Controller Valve is designed for use with TOTO Ecopower 0.5 GPM sensor faucets, delivering touchless, hygienic operation without the need for external power or batteries. Powered by a self-sustaining hydroelectric system, it activates water flow only when hands are detected by the spout-mounted sensor and shuts off immediately after, conserving water and energy. Ideal for commercial settings, this valve offers a maximum flow rate of 0.5 gallons per minute, features a sensing range of 5-1/8 to 7-7/8 inches, and supports ADA compliance for accessibility.