This Kidde Nighthawk KN-COEG-3 alarm detector is a reliable choice for protecting your home from explosive gas and carbon monoxide. Made in the United States, this device is designed to keep you safe from potential dangers. It is compatible with gas power sources and features advanced technology for accurate and quick detections. With a brand name you can trust, this alarm detector is a great addition to any HVAC and refrigeration system. It is easy to install and requires no custom bundles. The model number is KN-COEG-3, and it has not been modified in any way. This device is perfect for businesses and industries that need a reliable alarm detector.