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Below this temp (say in the middle of the night), I want the fan to cut off until the temp returns to 65 degrees or higher. If this switch doesn't do the job for me, can you recommed a switch that does? My windows are open during all periods that I would consider running the fan.<br />Thanks!</div><div class="BVQAContentData BVQAQuestionData"> <div class="BVQAElapsedTime">9 months ago</div><div class="BVQASignature"><div class="BVQAWrittenBy">by </div><div class="BVQANickname"><a title="Read all my Q&A" data-bvtrack="eName:ProfileLink" onmouseout=" bvProfileSnapshot.hideOpenPopinAfterDelay(1000 ,250 ); " name="BV_TrackingTag_Question_Display_ReadAllQA_Chuckles" class="BVQANickname" onclick="var popupWin = window.open(this.href, null, 'resizable=1,status=1,scrollbars=1,width=800,height=600,top=0'); popupWin.focus(); event.preventDefault?event.preventDefault():event.returnValue = false;" href="http://ugc.grainger.com/profiles/5049-en_us/7jrbgl20jvhofjva3uzyz3j5j/profile.htm" onmouseover=" bvProfileSnapshot.showHiddenPopinAfterDelay('BVDI_PSPopin_sxi0cr666y1bazrs6kw21d3l3_ID', 'http://answers.grainger.com/answers/5049-en_us/7jrbgl20jvhofjva3uzyz3j5j/profilesnapshot.djs?format=embeddedhtml', 'ProfileSnapshotFrame' ,500, 500 ) && BVAnalyticsTracker.fireActionEvent(this); ">Chuckles</a></div><a title="Read all my Q&A" data-bvtrack="eName:ProfileLink" onmouseout=" bvProfileSnapshot.hideOpenPopinAfterDelay(1000 ,250 ); " name="BV_TrackingTag_Question_Display_ReadAllQA_Chuckles" class="BVQAUserProfile" onclick="var popupWin = window.open(this.href, null, 'resizable=1,status=1,scrollbars=1,width=800,height=600,top=0'); popupWin.focus(); event.preventDefault?event.preventDefault():event.returnValue = false;" href="http://ugc.grainger.com/profiles/5049-en_us/7jrbgl20jvhofjva3uzyz3j5j/profile.htm" onmouseover=" bvProfileSnapshot.showHiddenPopinAfterDelay('BVDI_PSPopin_sxi0cr666y1bazrs6kw21d3l3_ID', 'http://answers.grainger.com/answers/5049-en_us/7jrbgl20jvhofjva3uzyz3j5j/profilesnapshot.djs?format=embeddedhtml', 'ProfileSnapshotFrame' ,500, 500 ) && BVAnalyticsTracker.fireActionEvent(this); "> <img src="http://grainger.ugc.bazaarvoice.com/answers/5049-en_us/static/moreQuestionsAndAnswers.gif" alt="Read all my Q&A"/></a><div class="BVDI_PSSpacer"> </div><div class="BVDI_PS BVDI_PSPopin BVDIHidden BVDI_PSNotLoaded BVQA_PSPopin" id="BVDI_PSMetaData_sxi0cr666y1bazrs6kw21d3l3_ID" onmouseover=" bvProfileSnapshot.showHiddenPopinAfterDelay('BVDI_PSPopin_sxi0cr666y1bazrs6kw21d3l3_ID', 'http://answers.grainger.com/answers/5049-en_us/7jrbgl20jvhofjva3uzyz3j5j/profilesnapshot.djs?format=embeddedhtml','ProfileSnapshotFrame',500,500) &&BVAnalyticsTracker.fireActionEvent(this);" onmouseout=" bvProfileSnapshot.hideOpenPopinAfterDelay(1000,250);"><div class="BVDI_PSInside"><div class="BVDI_PSSnapshotContainer BVQA_PS_7jrbgl20jvhofjva3uzyz3j5j_Container"><div class="BVDI_PSSnapshotNotLoaded" style="display: none"> </div><div class="BVDI_PSSnapshotLoading"><img src="http://grainger.ugc.bazaarvoice.com/answers/5049-en_us/static/profileSnapshotLoading.gif" alt="Please wait while more information about Chuckles is loaded." title="Please wait while more information about Chuckles is loaded."/></div><div class="BVDI_PSSnapshotTimeoutError BVDIHidden">Additional information about Chuckles could not be loaded. </div></div></div></div></div><div class="BVQAAnswerQuestion"><a title="Answer this question" data-bvcfg="__CONFIGKEY__" data-bvjsref="http://answers.grainger.com/answers/5049-en_us/product/1TKF9/question/46088/answerquestion.djs?format=embeddedhtml&campaignid=BV_QA_BROWSE&sessionparams=__BVSESSIONPARAMS__&return=__RETURN__&innerreturn=http%3A%2F%2Fanswers.grainger.com%2Fanswers%2F5049-en_us%2Fproduct%2F1TKF9%2Fquestions.djs%3Fformat%3Dembeddedhtml%26expandquestion%3D46088&user=__USERID__&authsourcetype=__AUTHTYPE__&submissionparams=__BVSUBMISSIONPARAMETERS__&submissionurl=__BVSUBMISSIONURL__" name="BV_TrackingTag_Question_Display_AnswerThisQ_46088" onclick="bvShowContentOnReturnQA('5049-en_us', '1TKF9', 'BVQAQuestion46088');return typeof(BVQAOnSubmit)=='function' ? 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data-bvcsref="http://answers.grainger.com/answers/5049-en_us/product/1TKF9/subscribeanswers.htm?format=embeddedrpc&contentid=46088&answers=true&user=__USERID__&authsourcetype=__AUTHTYPE__" data-bvtrack="eventTarget:Product,eName:ProductFollow" data-bvcsappcode="qa" name="BV_TrackingTag_Question_Display_SubcribeContent" class="BVDILink BVDI_CSSubmitLink" data-bvcssubjectid="1TKF9" href="javascript://" data-bvcssubjecttype="product"><span class="BVDILinkSpan">I have this question too</span></a></div></div> <div class="BVQAQuestionAnswerDivider"><h2 class="BVQAQuestionAnswerDividerHeading">Answers </h2></div><div id="BVQAQuestion46088Answers" class="BVQAAnswers"><div id="BVQAAnswer47784" class="BVQAContent BVQAAnswer BVDI_BAContentTechSupport"><div class="BVDI_BA BVDI_BAAnswer"><div class="BVDIInside BVDI_BAInside"><div class="BVDIBody BVDI_BABody"><ul class="BVDI_BAList"><li class="BVDI_BAItem BVDI_BAItemOdd BVDI_BAItemTechSupport"><a onclick="return false;" class="BVDILink 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There are several issues that should be considered before doing so. I would recommend calling our HVAC tech team to discuss these issues. 800-472-4643<br /><br />Thank you for using Grainger Ask and Answer.</div><div class="BVQAContentData BVAnswerData"> <div class="BVQAElapsedTime">8 months ago</div><div class="BVQASignature"><div class="BVQAWrittenBy">by </div><div class="BVQANickname"><a title="Read all my Q&A" data-bvtrack="eName:ProfileLink" onmouseout=" bvProfileSnapshot.hideOpenPopinAfterDelay(1000 ,250 ); " name="BV_TrackingTag_Answer_Display_ReadAllQA_jmurillo" class="BVQANickname" onclick="var popupWin = window.open(this.href, null, 'resizable=1,status=1,scrollbars=1,width=800,height=600,top=0'); popupWin.focus(); event.preventDefault?event.preventDefault():event.returnValue = false;" href="http://ugc.grainger.com/profiles/5049-en_us/JasonM/profile.htm" onmouseover=" bvProfileSnapshot.showHiddenPopinAfterDelay('BVDI_PSPopin_iwk52efmzeqkr3xgfdozq0ge4_ID', 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so you can switch on either way.<br /><br />The Grainger 2E834 is one such thermostat, or search for 'thermostat' and 'spdt' to find other possibilities. Also, any 'attic fan controller' should fill the bill.</div><div class="BVQAContentData BVAnswerData"> <div class="BVQAElapsedTime">7 months ago</div><div class="BVQASignature"><div class="BVQAWrittenBy">by </div><div class="BVQANickname"><a title="Read all my Q&A" data-bvtrack="eName:ProfileLink" onmouseout=" bvProfileSnapshot.hideOpenPopinAfterDelay(1000 ,250 ); " name="BV_TrackingTag_Answer_Display_ReadAllQA_MissFixit" class="BVQANickname" onclick="var popupWin = window.open(this.href, null, 'resizable=1,status=1,scrollbars=1,width=800,height=600,top=0'); popupWin.focus(); event.preventDefault?event.preventDefault():event.returnValue = false;" href="http://ugc.grainger.com/profiles/5049-en_us/a71snvfhsrojxvwdldz4w71b6/profile.htm" onmouseover=" bvProfileSnapshot.showHiddenPopinAfterDelay('BVDI_PSPopin_6s4s3r3a6fdbd6f29wb0vkx60_ID', 'http://answers.grainger.com/answers/5049-en_us/a71snvfhsrojxvwdldz4w71b6/profilesnapshot.djs?format=embeddedhtml', 'ProfileSnapshotFrame' ,500, 500 ) && 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