• Uses 2AA batteries (included)
• Table top use or wall mount
• Biomimetic sensor
• Samples air once every second
• Calibrated at four levels for accuracy
• Test/silencer button realarms if levels persist
• Unique self testing system alerts if malfunctions
• 3 indicator lights green power status, yellow service, red warning
• For questions on local legislation go to www.firstalert.com/ legislation-map/and click on your state or call 800-275-2576 5 year limited warranty

30-Day Return Guarantee

We want you to be fully satisfied with every item that you purchase from www.acehardware.com. If you are not satisfied with an item that you have purchased (excluding Gift Cards and gas-powered outdoor equipment*), you may return the item up to thirty days after the original purchase date to receive a store credit (less shipping, handling and other charges). We recommend that you make returns of online purchases to an Ace retail store near you which will issue your store credit. If you do not have an Ace retail store near you, please contact a Customer Service Specialist by calling 1-866-290-5334 for complete return instructions. Please refer to our Return Instructions for more information about returning a purchase.

The item must be returned in good condition, in original boxes (whenever possible), and with all paperwork, parts and accessories to insure full credit. After 30 days, please contact the manufacturer directly.

*Gas-Powered Outdoor Equipment cannot be returned once gas or oil has been put in it, even if the Equipment has been drained of these materials.