System Sensor 4WTA-B Four Wire Smoke Detector With Built-In 135 Degree Fixed Heat Sensor & Sounder

System Sensor 4W-B Four Wire Smoke Detector 4 wire type smoke detectors are compatible with all alarm systems, unlike the less popular 2 wire type. We're often asked which type we recommend, 2 wire type or 4 wire type. If you are going to have only a few and they will all be on one level, we recommend 2 wire type. On the other hand, if you will have smoke detectors on more than one level, will have more than a four or five, or you need them with built-in sounders we then recommend the 4 wire type. Data SheetInstallation manual

System Sensor 4WT-B Four Wire Smoke Detector With Built-In Heat Sensor 4 wire type smoke detectors are compatible with all alarm systems old and new, unlike the less popular 2 wire type. This model is the same as the 4w-b except it has a built-in 135-degree heat sensor as well. We're often asked which type we recommend, 2 wire type or 4 wire type. If you are going to have only a few and they will all be on one level, we recommend 2 wire type. On the other hand, if you will have smoke detectors on more than one level, will have more than a four or five, or you need them with built-in sounders we then recommend the 4 wire type. Data SheetInstallation manual

System Sensor i4 Series 4-wire Smoke / CO Detector If you're looking for an aesthetically pleasing, cost effective solution to detecting smoke and carbon monoxide then the System Sensor i4 Series Smoke/CO Combination detector is what you've been looking for.The COSMO-4W is a 4-wire smoke detector with built-in carbon monoxide detector. This is compatible with most hardwired alarm systems. You will have to use a control module. For the COSMO-4W you will use the COSMOD4W control module. The module is the interface between the detector and the panel. It allows a 2-wire or 4-wire device to communicate distinct smoke, maintenance and CO signals to the panel while reducing wiring requirements as compared to separate smoke and CO devices. The modules can handle 12 devices on a loop. In addition to that all COSMOs have a built-in sounder allowing the COSMOD module to act as a reversing relay, setting off all...