Radar sensing uses reflected radio waves, typically microwave or millimeter-wave (mmWave) signals, to detect objects and measure their distance, level, presence or motion without physical contact. By timing or analyzing the frequency shift of the returned signal, a radar sensor can report fill levels in tanks, distances to surfaces, room occupancy, or the speed and direction of moving objects.
LoRaWAN radar devices take a reading, encode it into a compact payload, and transmit it over long range at low power to a nearby gateway. Most run on batteries for years thanks to infrequent uplinks, and many tolerate dust, fog, steam and weather that defeat optical or ultrasonic alternatives.
Common deployments include:
- Tank, silo and water-level monitoring
- Smart parking and bin fill-level detection
- Indoor occupancy, presence and people counting
- Traffic and speed measurement
When comparing models, weigh measurement range and accuracy, beam angle, IP enclosure rating, battery life, supported regional frequency plans, and whether a tested payload codec ships for your network server.
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DC520 - People Counter
The CNDingtek dc520 is a microwave radar bidirection people counter for indoor using, which calculate the …
DO202 - Parking Occupancy Sensor
The CNDingtek do202 is parking occupancy sensor with combination of microwave radar and magnetic detection, …
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✓ CERTPCR2 Radar People Counter
Parametric‘s PCR2 people counter uses radar signals to provide a camera-less solution. Utilising LoRaWAN™ …
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R719A is a smart parking vehicle detection sensor. It can be used to detect the presence or absence of parking …
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Cicicom's LoRaWAN smart parking sensor SL-G-I3 accurately detects parking events, by utilizing cutting-edge …
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The TEKZITEL TEKZIPARK is a smart parking sensor that uses radar technology. It enables occupancy status …
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YO People Counter is a bi-directional device that uses a novel 24 GHz radar transceiver to detect motion from …
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Frequently asked questions
What does a LoRaWAN radar sensor measure?
Radar sensors emit microwave or millimeter-wave (mmWave) signals and analyze the reflected return to measure distance, fill level, presence, occupancy, motion or speed. Because they are non-contact, they work through dust, fog, steam and many enclosures, and are unaffected by light, color or surface fouling that can limit optical or ultrasonic methods.
How is radar different from PIR or ultrasonic sensors for LoRaWAN?
Unlike PIR, which detects only moving heat, radar can sense stationary presence and fine micro-movements such as breathing. Compared with ultrasonic, radar is less sensitive to temperature, wind and acoustic noise and generally offers more reliable readings in harsh or vaporous environments.
What should I compare when choosing a LoRaWAN radar sensor?
Check measurement range and accuracy, detection beam angle, the radar band used, battery life or power source, IP enclosure rating, supported regional frequency plans (EU868, US915, AS923 and others) and whether a ready-made payload codec is provided for your network server.