There is substantial chatter on this forum regarding residential smoke detectors. But I've seen little on CO and/or Combustible gas (e.g. methane) detectors. I understand that they are all 4-wire devices. Excepts perhaps those that implement a separate trouble circuit such as the Napco CO12 which can be used in a 4 or 6 wire configuration.
I understand that power supervision relays are required.
What brands/models do folks prefer? I've looked System Sensor, GE, Macurco, Napco. The Napco CO device uses a competing sensing technology, distinct from the rest. True? Any quality issues with any brand/model?
I see CO and Methane detection as a close second to smoke/fire when it comes to life safety. One might argue that CO should be top priority as its looking for a colorless, odorless gas....
FWIW, I've selected the GE 449CSTE smoke/heat detectors for my system upgrade. I'm leaning toward the System Sensor or GE CO devices and the Macurco Methane device. But yesterday I was reading about the Napco CO device and now I'm questioning my choices.
Any comments or data?
I understand that power supervision relays are required.
What brands/models do folks prefer? I've looked System Sensor, GE, Macurco, Napco. The Napco CO device uses a competing sensing technology, distinct from the rest. True? Any quality issues with any brand/model?
I see CO and Methane detection as a close second to smoke/fire when it comes to life safety. One might argue that CO should be top priority as its looking for a colorless, odorless gas....
FWIW, I've selected the GE 449CSTE smoke/heat detectors for my system upgrade. I'm leaning toward the System Sensor or GE CO devices and the Macurco Methane device. But yesterday I was reading about the Napco CO device and now I'm questioning my choices.
Any comments or data?