Hi,
if you want to replace it, then you have to get some idea that which one you will choose.because I think there are two main types of smoke detectors: ionization detectors and
photoelectric detectors. A smoke alarm uses one or both methods,
sometimes plus a heat detector, to warn of a fire. The devices may be
powered by a 9-volt battery, lithium battery, or 120-volt house wiring.
Vacuum Cleaners |
Roomba
Edited by: pophopekins