True Fitness Cs3.0 Owner's Manual page 32

Two users wearing the same kind of transmitter at the same
time and in close proximity may cause false heart rate display
readings.
Use a Polar® brand standard transmitter or compatible
transmitter.
TRUE's HRC is patented under USPTO #5,462,504.
If your heart rate exceeds your target by 12 beats, there will be a
30% MET reduction in workload to reduce your heart rate.
If your heart rate exceeds your target by 20 beats, the unit will
automatically shut off as a precautionary measure. (Be cautious
when selecting your target heart rate so the 20 beat variance
will not exceed your maximum heart rate as determined by your
physician).
HRC Safety
chapter four: HRC
CS Treadmill Owner's Guide
Technical
Tips
HRC Safety
Features
32