http://www.diycontrols.com/m-482-gentex.aspxweekly 0.7 http://www.diycontrols.com/p-10191-gentex-s-series-sr-hard-wired-smoke-alarm-with-relay.aspxdaily0.9 http://www.diycontrols.com/p-10214-gentex-s-series-scr-hard-wired-smoke-carbon-monoxide-alarm-with-relay.aspxdaily0.9