What is the 10 year tamper proof smoke detectors ?

At first, we should know what is the tamper proof function ？understanding smoke detector features. … Battery-powered units run on 9-volt or AA batteries, or a long-life lithium battery that may be sealed inside the alarm so the battery is non-replaceable. This feature is referred to as tamper-proof. So about 10 year tamper proof smoke detectors，meaning […]