... dial up again and test radiation value. You will find the number value is much lower. After finishing test, power off ... stick at correct place. You can use test to find where is the antenna during dialing. As this machine ... back of test, but not close to it, when number value get to stable but some pulse, for an ... same time. It use 9V 6F22 battery, if the number value is very small or alarm is very low, ...