RPM Speed Sensor

• How do I attach the RPM Speed Sensor to my bike?
• How do I update the firmware on my RPM Speed Sensor?
• What devices are compatible with my RPM Speed Sensor?
• Is the RPM Speed waterproof?
• Is the RPM Speed Sensor Compatible with Spin Bikes?
• How does the RPM Speed work?
• How do I replace the RPM Speed battery?