ITPEC IP April 2024 Question 23

A meter at the home that measures electricity and gas use and sends the readings to the supplier — a smart meter is a utility meter with a communication function.

A conventional meter is read by a person who visits the house. A smart meter measures consumption automatically at short intervals and transmits the data over a network, such as a cellular network, to the electricity or gas company. The supplier gets readings without a visit and can bill precisely, and households can see their usage in detail, for example hour by hour. Being connected to the network and sending measured data on its own is what makes it an IoT device.

Answer (b)

Why not others:

• •(a) — describes an acceleration sensor, which detects changes in speed and motion in a controller or navigation system
• •(c) — describes remote wipe, a security function of mobile device management for a lost or stolen device
• •(d) — describes an activity tracker such as a smart pedometer or wearable, which analyses walking and estimates calories burned

Key rule: An IoT device pairs a sensor with a network connection so data is collected and sent without human action; the smart meter does this for utility consumption, replacing manual meter reading.

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