NB-IoT wireless parking lot occupancy sensor

WiiHey’s in-ground parking lot sensor enables you to monitor your parking facilities efficiently with real-time, individual vehicle, individual space data. It is the key to smart, active parking lot management.

smart parking lot sensor

The effectiveness of a parking lot management system is greatly relied on the detection of available parking spaces. WiiEMS offers parking lot sensing technology that can be easily tailored to your existing parking system, to monitor parking traffic, and to gather real time and precise information from each individual parking lot space.

The heart of the WiiEMS sensor is a geomagnetic sensor that measures the X, Y, and Z-axis values of the Earth’s magnetic field. As vehicles come into the range of the sensor, changes in the surrounding magnetic field occur and are detected. As auxiliary, an additional luminance sensor is added for double verification by detecting the background brightness changes when vehicles drive above the sensor.


  • Geomagnetic sensor & luminance sensor;
  • Wireless communication for ease of installation;
  • Powered by long-life batteries;
  • Robust construction to resist both vandalism and accidental damage;
  • Easy integration with existing parking management systems;


  • Parking space occupancy detection;
  • Vehicle detection in drive-through;
  • Vehicle counting in toll booths;
  • Enable advanced parking space management and planning;
  • Enable advanced parking guide system

Parking Lot Sensor
Sensor geomagnetic sensor
and auxiliary luminance sensor (Lux detection)
Resolution 1.5 Mgauss / 0.028Lux
Wireless Connectivity
Network NB-IoT:LTE Cat NB2
Transmitting Power: 23dBm±2dB
Receiving Sensitivity: -114dBm(no retransmit)
          -130dBm(with retransmit)
SIM Card Type Micro SIM Card
Power source 8000mAh@3.6V lithium battery
(Solar panel charging module optional)
Battery life 3-5 years
Battery Changeable Yes
Case Material Transparent High Intensity Plastic
Dimensions Ø 90 mm * height 33 mm
Weight 120 g
Installation Recessed
Operating temp -20 °C to +65 °C
Ingress Degree IP68
Compressive strength >20,000 kg

WiiUNG supports two optional wireless communication methods -- UNB(Ultra Narrow Band) IoT technology and NB (Narrow Band)-IoT technology. Both technologies have transmission ranges of up to several kilometers in urban environments, with very low power consumption, data are then transmitted to cloud sever for further processing and delivery into the end-user’s system.

Topology of NB-IoT communication:

wiiung NB-IOT in hohnet topology