DO209 Underground Parking Sensor
DO209 Underground Parking Occupancy Sensor
24GHz Radar + Geomagnetic Detection Below the Surface
DO209 combines 24GHz microwave radar and geomagnetic detection for underground parking occupancy monitoring. It supports NB-IoT, LoRaWAN, Cat-M, and 4G LTE connectivity with IP68/IK10 protection, 38 Ah battery, and Bluetooth configuration for parking projects that need cleaner bay appearance and stronger surface protection.
Last updated: May 31, 2026
Customer Value
Built for parking projects where underground mounting and reliability matter
Dual-Sensing Accuracy
24GHz microwave radar combined with geomagnetic detection achieves 99% vehicle presence recognition for reliable parking bay status data.
Underground Protection
Underground mounting with IP68 waterproofing and IK10 impact resistance protects the sensor from surface-level damage, vehicle impact, and weather exposure.
Long Battery Operation
Dual ER34615 batteries provide 38 Ah at 3.6 V, supporting more than 4 years of operation at 15 uploads per day for extended field deployment.
Multiple Wireless Versions
NB-IoT, LoRaWAN, Cat-M, and 4G LTE options support different regional network conditions, with global LTE frequency bands available.
Environmental Sensing
Built-in temperature (-30°C to +85°C, ±0.3°C) and humidity (0-90%, ±2% RH) measurement provides environmental data alongside parking occupancy status.
Bluetooth Configuration
Bluetooth supports remote configuration, firmware upgrades, and maintenance workflows without physical device access after underground installation.
Hard Facts
Hard facts for product evaluation
Vehicle detection accuracy
Microwave radar technology
Battery capacity at 3.6 V
Battery life at 15 uploads/day
Waterproof and impact protection
Sensor weight, nylon enclosure
NB-IoT, LoRaWAN, Cat-M, 4G LTE
Top diameter, 100 mm height
Applications
Underground parking sensing for commercial, public, and institutional car parks
DO209 is suitable for commercial parking lots, public parking projects, campuses, hospitals, and any site where underground mounting provides better protection and a cleaner bay appearance than surface-mounted alternatives.
Comparison
DO209 vs DO202 Parking Occupancy Sensors
Use this comparison to choose between underground-mounted DO209 and surface-mounted DO202 for your parking project.
| Selection factor | DO209 Underground Parking Sensor | DO202 Surface-Mount Parking Sensor |
|---|---|---|
| Installation method | Underground mounting below parking surface | Surface-mounted on parking bay |
| Detection technology | 24GHz microwave radar + geomagnetic | 24GHz radar + magnetic detection |
| Detection accuracy | 99% | 99% |
| Battery | ER34615 x2, 38 Ah at 3.6 V | ER26500 x3, 25500 mAh at 3.6 V |
| Battery life | More than 4 years at 15 uploads/day | More than 7 years under reference conditions |
| Protection | IP68 / IK10 | IP68 / IK10 |
| Wireless options | NB-IoT, LoRaWAN, Cat-M, 4G LTE | 4G, LoRaWAN, NB-IoT, Multi Tech Cat-M/NB-IoT |
| Environmental sensing | Temperature + humidity measurement | Temperature measurement |
| Enclosure | Nylon, cylindrical Φ114×100 mm | ABS+PC, 183×183×38 mm |
| When to choose | Choose DO209 when underground mounting is preferred for better surface protection, cleaner appearance, and impact resistance in high-traffic parking areas. | Choose DO202 when surface mounting is acceptable and longer battery life (7+ years) is a priority for the parking project. |
Product Video
DO209 underground parking sensor installation
Watch the DO209 installation video to understand the underground mounting process. For project-specific deployment planning, contact CNDINGTEK support.
Selection Guide
How to Choose the Right DO209 Configuration
Selecting the right DO209 version depends on the parking layout, surface material, network coverage, reporting strategy, and platform requirements.
Where to Buy
Request a DO209 project quotation
DO209 is sold by quotation. Share the parking layout, surface conditions, preferred wireless network, reporting strategy, and expected rollout scale so CNDINGTEK can confirm the suitable configuration and prepare a project quotation.
Useful inputs for faster quoting
- Parking lot type, number of bays, surface material, and mounting preference
- Preferred NB-IoT, LoRaWAN, Cat-M, or 4G LTE network
- Reporting interval, platform/API requirements, and guidance screen integration
- Quantity, delivery schedule, and deployment region
FAQ
Frequently Asked Questions about DO209 Underground Parking Sensor
What is the difference between DO209 and surface-mounted parking sensors?
DO209 is designed for underground mounting below the parking surface, providing reduced above-ground exposure, stronger surface protection, and a cleaner bay appearance. Compared with surface-mounted DO202 or DO201, DO209 is better suited for projects where impact resistance and aesthetic requirements are priorities.
What detection technology does DO209 use?
DO209 combines 24GHz microwave radar range measurement and geomagnetic detection. This dual-sensing approach achieves 99% vehicle presence recognition accuracy, with errors only occurring in extreme environmental conditions such as flooding or thunderstorms.
Which wireless versions are available for DO209?
DO209 is available with NB-IoT, LoRaWAN, Cat-M/multi-tech, and 4G LTE wireless versions. The 4G LTE version supports global LTE frequency bands (B1/B3/B5/B7/B8/B20/B28) for worldwide deployment.
How long can the DO209 battery last?
DO209 uses two ER34615 non-rechargeable lithium thionyl chloride batteries with 38 Ah at 3.6 V. Datasheet reference life exceeds 4 years at 15 uploads per day with 30-minute cycle detection. Actual life depends on ambient temperature, network type, and wireless signal strength.
What certifications does DO209 have?
DO209 has CE and RoHS certifications. The nylon enclosure is rated IP68 for waterproof protection and IK10 for impact resistance, suitable for underground parking installation in demanding environments.
How is DO209 installed?
DO209 uses underground mounting. Installation requires planning for drilling depth, bay layout, gateway or base station coverage, and maintenance access. Confirm the parking surface and network environment before batch rollout. Bluetooth configuration supports device maintenance after installation.
Can DO209 measure temperature and humidity?
Yes. In addition to parking occupancy detection, DO209 includes temperature measurement (-30°C to +85°C, ±0.3°C) and humidity measurement (0-90%, ±2% RH), providing environmental data alongside parking status.
Is DO209 a standard product or a customized product?
DO209 is a normally sold product with standard versions supporting multiple wireless options. Pricing is quotation-based after project requirements are reviewed.
CNDINGTEK Support
Evaluate DO209 for your parking project
Share the parking layout, surface conditions, network preference, reporting strategy, and expected rollout scale so we can confirm the DO209 configuration.