Xylem Inc.
Bell & Gossett ecocirc is designed for plumbing systems without a recirculation line and turns the pump on only when the system needs hot water. No electrical outlet is required under the sink. Features include 24-hour timer, wireless RF communication, and operation on 2 AA batteries.
Protimeter: Aquant
Sensaphone: Sentinel PRO
KI: Passel
Sielox: AnyWare
Global Drain Technologies: 2000 T-Series Threshold Drain