DSC Carbon Monoxide Detector PG9913 These detectors were manufactured in November 2018 The expiration date on the detector says November, 2023 Though it might sound odd, it?s true that carbon monoxide detectors expire. Carbon monoxide detectors expire because the sensor part that reacts with carbon monoxide gas loses sensitivity as time goes by. The average carbon monoxide detector can last somewhere from five to ten years. Most carbon monoxide detectors will have an expiration date on the back to let you know when you should replace them. It can also be helpful to write the date you bought your carbon monoxide detector on the device itself as a useful point of reference. Here are some things you can do to get the most out of your carbon monoxide detector during its lifespan: Test and clean your carbon monoxide detector monthly If battery-powered, replace batteries twice a year Place it in an area out of direct sunlight that?s free from excess humidity, smoke, and dust Replace the detector if it has excess dirt and grime that can?t be cleaned, if it begins chirping or giving false alarms, or if it?s otherwise faulty. ALL Carbon Monoxide detectors, regardless of make, model or company. Is to be replaced 5-6 years AFTER installation of a new device to insure proper Carbon Monoxide readings! These units will need to be replaced in the year 2028 if installed in 2023 The PG9913 Wireless PowerG Carbon Monoxide Detector is designed to provide reliable front-line protection against the silent threat of carbon monoxide poisoning. Leveraging the most innovative technology, the WS9913 is equipped with a sophisticated electrochemical sensor to provide accurate detection of CO gas levels and initiates an alarm via the security system before dangerous CO levels are reached. With minimal installation time required and few holes to drill, the PG9913 Wireless Carbon Monoxide Detector reduces on-site time, increases productivity and revenue. The compact design, battery power and wireless capability of this detector offer home and business owners more choice in where they may be installed, to include locations in which wiring is difficult or impossible. Features: Early warning of carbon monoxide (CO) poisoning danger Visual and Audible alarm indications upon CO detection Built-in 95db Alarm Buzzer and large flashing LED alarm Visible and transmitted low battery indication Technical Specifications: Dimensions: 127 x 40mm (5 x 1.6in) Battery Life: 1 year (typical use) Battery Type: 9V alkaline battery Weight: 180gr (6.35oz) Operating Temperature: -10 C - 55 C (14 F -131 F) 20% RESTOCKING FEES AND SHIPPING WILL BE CHARGED. IF ITEM IS FUNTIONAL OR INCOMPLETE. An Important Message Regarding USPS Tracking Numbers Due to high volume of shipments sent through USPS, Tracking numbers get recycled on occasion. This means, when you receive the notificaiton that your package has been shipped via USPS, and you try to track the status of the package, it may show your package was Delivered even though the label was just generated. Please don't panic, the solution to this issue is to wait until the Post Office scans the label, then the tracking information will update accordingly. Please let us know if you have any questions. Your feedback is extremely important to us! If you are satisfied with our service please take the time to give us positive feedback. We tremendously appreciate it! We strive for your complete satisfaction. Likewise, if you have any issues, please contact us first, and we promise we will do our best to satisfy your needs and solve the problem. If we resolve your problem, we kindly ask you to still leave us positive feedback. Your kindness will be extremely appreciated! Your feedback is extremely important to us! If you are satisfied with our service please take the time to give us positive feedback. We tremendously appreciate it! We strive for your complete satisfaction. Likewise, if you have any issues, please contact us first, and we promise we will do our best to satisfy your needs and solve the problem. If we resolve your problem, we kindly ask you to still leave us positive feedback. Your kindness will be extremely appreciated!