Here is a link where you can download the user manual. It says to remove the batteries, wait 1 hr, then install fresh batteries. When the page for diplodocs opens click on security number and enter the code it shows to download the manual. http://safemanuals.com/314159.php?k=af5d595162dd03d6ac627239ba1fbecf&ID=530143&q=HONEYWELL%20T8132A
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Here is a link where you can download the user manual. It says to remove the batteries, wait 1 hr, then install fresh batteries. When the page for diplodocs opens click on security number and enter the code it shows to download the manual.
http://safemanuals.com/314159.php?k=af5d595162dd03d6ac627239ba1fbecf&ID=530143&q=HONEYWELL%20T8132A