It uses a 9 volt battery for its operations; thus, you will not need to think of replacing your battery anytime soon. The Kidde smoke alarm battery uses the ionization sensing technology to detect all fire particles invisible to the naked eye, and this is done at a rate faster than that of the alarm system that uses the photoelectric sensors. To indicate that your alarm is receiving power, the Kidde smoke detector has a led that flashes red. This basic sensor unit from Kidde delivers early warning signals to you and your family members whenever there a potential danger. It is straightforward and easy to install, with a test button responsible for the verification of your device’s battery functions, electronic circuitry, and its horn, to ensure that they are all operating as they should. The tamper resist feature is also used by the i9050 smoke detector to deter tampering and theft from intruders. You can place this device anywhere within your living area without any issue. If you ever require something basic yet sturdy and reliable, the Kidde i9050 is your best bet. You can install this device throughout your home either as a single or twin unit. With no required wiring, the installation process of this smoke detector system is simple and doesn’t take too much time. At ten feet during an emergency, the alarm of this unit will be a sound rated at 85 decibels, a sound that will be produced repetitively in threes until the potential danger has been dealt with.