I receive a notification of “Battery Low”. What should I do? When you get this notification, please change your battery. Otherwise SiMP Contact Sensor can’t work normally. By Isabelle|2019-10-24T15:00:36+08:0010 月 24th, 2019|Contact Sensor|0 條評論 Share This Story, Choose Your Platform! About the Author: Isabelle 留言 取消回覆Comment Save my name, email, and website in this browser for the next time I comment.