AO Smith 9007666005 Remote Temperature Controller<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>4" Universal Appliance Adaptor with Back-Flow Preventer</li><li>For Takagi， Paloma， Rheem， Noritz tankless water heaters</li><li>This Universal Adaptor has seals on both ends and has a back-flow preventer built in</li><li>Can be used with 110 indoor non-condensing</li><li>Can be used with 110 outdoor non-condensing</li><li>Can be used with 310 indoor non-condensing</li><li>Can be used with 310 outdoor non-condensing</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41WpZLQOH7L.jpg" noproxy>