Thanks for the response. The pdf didn't truly help me but gave me a light bulb moment to READ the Elk wireless manual closer since for the GE system you need to have the GE system learn the sensor. You have to go to the keypad and goto option 14 and learn the sensor through there. This is where you have to press the test button until the Elk learns the sensor. Also, the TX ID is the same that is on the side -- you just need to have Elk learn the sensor and cannot just enter the data manually.