Cranes heart rate monitor manual with strap

SOURCE: Every heart rate monitor - replacement battery doesn't work.

This link might be helpful...under the picture of the given product click on "great information about this product" It gives all the specs and troubleshooting ideas. I hope this is helpful.

http://www.heartratemonitorsusa.com/Pages/TRANSMITTERS/T31-coded.html

SOURCE: I have a cardio zone heart rate monitor but not the manual.

No further need for assistance.

SOURCE: Watch won't read heart rate

It could be the battery on the strap is not good. However just to be sure make sure you are wetting the strap and it is around chest, front should sit right about on the bottom of pectoral or chest, if you are female make sure it is under your sports bra the bra band will be over it. I would start warming up then hit the start button it should work.

SOURCE: Sportsline SX Combo heart rate monitor not connecting

How old is the unit? Make sure you are wetting the electrodes on the strap and it is snug around your body and in contact with skin just below your chest if female under your sports bra. If that doesn't work the battery in your strap may not be good.

SOURCE: sports instruments pro9 watch strap problem

I have the same issue, and I am looking for a solution, what did you ultimately do?