You must install and remove the Blast sensor correctly.
**How to place your sensor into the attachment and then onto the bat. **
1 Turn the Bat Attachment inside out.
2 Take your sensor and place it on the top of the Attachment. Make sure the Blast Motion Logo is facing down toward the Attachment.
3 Reverse the Attachment from the inside out so that the sensor is now inside the Attachment. Ensure the logo is showing on top inside.
4 Place the Attachment on the Knob of the bat. Ensure the sensor is secured on the bat.