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Tempreature Tolerance 

The KeySafe C500™ has tempreature tolenrances from -32°C to 68°C. If you experience the Key Safe frozen then you simply have to de-ice the KeySafe. This can be done in a number of ways such as, placing you hand over the KeySafe for a couple mins, using a low heat hairdryer or simply using warm water. To prevent the KeySafe from freezing over again you can use WD40 or vaseline around the open dial and digits of the KeySafe.