<DIV>does anybody  can explain these two THERMOSTAT-TYPE(PROPORTIONAL  and  REVERSE-ACTION) for me, i have read the help file, but i can't understand well. if desired, can anyone provide  me a example ,showing  the distinguish between two type.                           </DIV>
<DIV>                                                                                                                                                                   thanks</DIV><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>