System Sensor COSMOD2W Frequently Asked Questions

How Do I Wire and Use a COSMO-2W Combination Smoke/CO Detector?
Wiring a COSMO-2W is very similar to using a 4-wire smoke. The COSMO-2W connects to a COSMOD-2W. The COSMOD-2W then connects to the panel. Learn to use the COSMO-2W.

What Gauge Wire Should I Use for a CO Detector?
Alarm Grid recommends using 18-gauge wire when installing hardwired carbon monoxide sensors. Some building codes may require this. Learn why 18-gauge wire is great for CO sensors.