COMPLEMENTARY BUTTON CELL BATTERIES AND ATTACHMENT MAGNET
In addition to two complementary button cell batteries, a complementary magnet is enclosed for easy attachment. Peel off the tape and attach the magnet to the location where you would like to place Prometheus Hygro Thermometer, which comes with a metal plate on the back side for magnet attachment.
LR44 is an alkaline 1.5 V battery. The most common equivalent batteries are:
LR44 can be also be replaced with a silver oxide battery. The most common silver oxide equivalents are: