To make the change just hit the switch button on the back of the instrument and you are done. The operational ranges of 302-604 are 20% to 99% RH for the humidity sensor and -4Â° F to 122Â° F for temperature â totally sufficient for this sort of home apparatus.
Your baby will probably be able to roll over when he's about six months or seven months, when his neck and arm muscles are strong enough. Some babies manage to roll over as early as three months, but other babies take longer than seven months.
A baby needs to develop muscle strength to be able to roll over, first from tummy to back, then vice versa. Babies may be able to roll over from tummy to back as early as 3 months and should be able to do so by 6 or 7 months. While lying on his or her tummy, you may first notice at about 3 or 4 months your baby lifting his or her head up.