Key features

• •Smoke Detector Need Activation Before Installation▶ Press test button and hold it for more than 3 seconds until LED lights, and release it within 2 seconds, the unit will generate a "beep" indicating that it is successfully activated. Smoke alarm won't work if activation fails
• •10 Years Panasonic Battery Smoke Detector▶ Bulid-in Panasonic battery guarantee 10 year service life, you won't worry about replacing battery anymore. Size: 3.94 * 3.94 * 1.18 inch, smoke detector can be held in one hand. If you have problem, please contact us
• •Smoke Detector Protect Environment▶ Smoke detector is inserted with sealed 10 year lithium battery, which does not contain radioactive material and has no harm to environment and human. Low battery warning, if smoke detector doesn't work, please contact us, we will solve it
• •Smoke Detector Test/Silence Button▶ Fire alarms smoke detectors has test function by pressing the test button, which is used to test if it is working normal. Weekly test is required. In order not to disturb your rest, fire detector has function of silence and no disturb
• •Easy Installation Smoke Detector▶ Fire alarm can easily install with mounting bracket or magnetic tape. Not hardwired anymore, it's easily to install on wall or ceiling. Our products are UL certified, you can rest assured and have absolute trust in our products
• •If you have any problem with the smoke detector, you can ask us for help, we will try best to solve it