The Tekmarnet® 2 Zone Manager 334 is Designed to Provide a Zoning Solution For 2-wire Tekmarnet® 2 Thermostats Used in Heating Systems. It Can be Used in Applications Ranging From Baseboard Zones, to Remote Manifolds For Radiant Heating. This Control Energizes up to 4 Zone Valves or Zone Pumps. It is Capable of Providing Power For up to 4 Tekmarnet® 2 Thermostats And Energizing Their Respective 24 V (Ac) or 115 V (Ac) Zones, as Well as Providing a Powered Zone Group Pump (Powered End Switch) Contact to Enable an External Device Such as a Manifold Pump. For Further Information And up to Date Literature Visit: Tekmar Documentation | Tekmar Controls | 334