Review on Heart rate monitor Polar H9 black M-XXL by Ada Stasiak ᠌

I have 2 old polar t34 sensors. One came with a treadmill, the other with an elepsoid. Both of them worked great. This sensor with an elepsoid does not want to work. The signal goes on, but the pulse does not give out. At some point, the pulse appears for a second and disappears again. I bought it specifically to replace the old sensor for the simulator, since the t34 does not provide for battery replacement, the purchase is useless for me. With the polar beat app, it works fine, but that's not much consolation.