Question 1

LoRaWAN or NB-IoT — which should I use?

Accepted Answer

It mostly comes down to fleet size and whether you can host a gateway. NB-IoT buys no infrastructure but pays a SIM subscription per device forever, so it suits a handful of scattered meters. Private LoRaWAN pays for gateways once and then carries thousands of devices with no per-device fee, so it wins for any fleet beyond a few dozen devices on one site. NB-IoT also cannot hand over between cells, so it is unsuitable for moving assets, and its coverage in India is far from universal.

Question 2

When is Wi-Fi the right choice for IoT sensors?

Accepted Answer

Inside a building that already has a Wi-Fi network, for devices that are mains-powered or report infrequently, or that need real bandwidth — images, audio, large logs. It is the wrong choice outdoors over any real area, because every access point needs power and backhaul, and it is hard on batteries, since every message costs a full connection sequence rather than a short transmission.

Question 3

What is MacTalk and when does it beat LoRaWAN?

Accepted Answer

MacTalk is Macnman's device-to-device LoRa protocol: sensors and actuators talk directly with no gateway, no network server and no internet. It beats LoRaWAN when the data never needs to leave the site — a level sensor switching a pump, a gas sensor tripping a valve — because it removes the gateway entirely and reacts in well under a second. The moment a dashboard or the cloud needs the data, LoRaWAN is the answer, often alongside MacTalk for the local control loop.

Question 4

Is cellular IoT cheaper than LoRaWAN?

Accepted Answer

Up front, yes — there is nothing to install. Over five years, rarely, except for very small fleets. Cellular devices cost more, each carries a subscription every year, and battery life is typically a year or two rather than ten, so the replacement visits add up. For a site of a few hundred sensors, private LoRaWAN usually costs a third to a half as much over five years. The crossover is commonly well under a hundred devices.

Question 5

How does the tool decide?

Accepted Answer

Physical gates first — coverage area, payload size, control latency, mobility and cloud requirement rule options out with stated reasons. The survivors are then scored on coverage fit, battery life, scalability, five-year cost, data capacity, control latency and independence from third-party networks, weighted by the priority you choose. Gateway counts and battery years come from the same engines as Macnman's other calculators.

IoT Technology Selector

1 · Your deployment

How they rank

LoRaWAN (private network)

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Strengths side by side

Cost over 5 years

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