free quote
 20170710 105928 HDR

 There are many styles of sensors with many different

 features but they all open up in a similar manner.

 20170710 105941

 Some are simple matter of pushing

 the button and pulling apart.

 20170710 110004 HDR  20170710 110153 HDR

   Others have a gap in which you put a

   flat head screw driver and twist to open.


   Once open the battery can be easily replaced.

   Please note where the positive (+) and negative (-) sides go.

   When you are done replacing the batteries

   all you have to do is close the case in the

   reverse way you took it off. DONE!