Wireless alarm systems protect your home against intruders and, with some models, fires or other emergencies. However, they have some disadvantages when compared to wired systems.
Wireless systems depend on batteries, which means frequent battery checks and, especially with larger systems, frequent battery changes.
Most wireless alarm systems can't connect to telephone land lines, which can be a drawback if you're looking for a system that notifies police or the fire brigade in the event of an emergency.
Wireless alarm systems don't have the same range as wired systems. In a large home or apartment, the signal strength may not be strong enough to reach every area, leaving portions unmonitored.
The components for wireless systems are typically more expensive up front than wired systems. Depending on the size of the system and the battery drain, the replacement costs for batteries may also be a factor.
Bad weather can interfere with the signal of a wireless alarm system. Certain appliances in the home that operate on radio frequency can also cause interference, though this is more common in inexpensive models.
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