I just installed the System Sensor and 9945 my in my garage and found the video you linked to be outdated. I needed to add a resistor across the terminals on the system sensor for end of line. Also I did not use a box at all. I surface mounted the system sensor and the 9945 with a short wire (about 10 inches) connecting the two. It’s the garage not a fashion show (lol) so I was fine with it being exposed.
Also I didn’t have to do the business of taping the magnet to the sensor.
Programmed as per Ryan’s article :
(change the settings in this order):
- Sensor Input: End Of Line
- Sensor Type: Heat
- Sensor Group: 26-Smoke-Heat
Here’s a link to my discussion about my garage install etc. About the EOL resistor:
My biggest issue was the included eol resistor was too short to span the terminals on the system sensor, and I didn’t want a splice in there. I actually used a different resistor with the same ratings I had on hand that had longer leads to make it cleaner.
Hope this is helpful.