Small Doctor series
Management and maintenance challenges for factory and plant equipment
We solve problems in the management and maintenance of factory and plant facilities through the use of drones and robotics.
ABOUT
What is Small Doctor ?
The Small Doctor series was developed as an entry-level model for indoor inspection drones.
This is a domestically produced drone that anyone can operate.
ABOUT
Product Lineup
SCENE
It is useful in the following situations:
PROBLEM
Best used in situations like this
I want to use a drone to inspect facilities , but...
Outsourcing cannot handle unexpected inspections
We outsource the operation to a drone company, and we are using it to check for leaks and other issues.
Difficult to use for sudden equipment troubles
Outsourcing costs pile up
Outsourcing regular inspections increases costs, making it difficult to increase inspection frequency.
Ultimately, you need a professional
Indoor drones are difficult to operate and require specialized personnel for in-house operation.
FEATURES
Features of Small Doctor
The Small Doctor series is a drone developed with a focus on lowering the barrier to operating indoor drones, with functions limited to flight stability sensors so that even beginners can use it indoors.
Aircraft operation stability
Equipped with a flight stability sensor, it can be operated even by people without drone piloting training. It achieves stable flight even in small and dark spaces, making it suitable for inspecting non-GNSS narrow spaces such as boilers, chimneys, sewers, ducts, pipes, attics, and cracks in dark places.
Achieve advanced inspections in dangerous locations.
Achieve stable flight in narrow and dark non-GNSS spaces
Stable hovering flight possible even in small spaces
Outstanding aircraft stability even when you let go
Real-time video transmission
Images captured by the drone are transmitted to a remote monitor in real time, allowing for an immediate grasp of the situation on-site and prompt response.
If you notice any areas of concern at the site, you can check them quickly and easily, which contributes to improving safety on site.
Check the video on the spot in real time
No radio license required, anyone can use it right away.
The cheapest domestic drone
The Small Doctor series was developed as an entry-level model for indoor inspection drones. Its functionality is limited to a flight stability sensor, and the price makes it easy to try out. Furthermore, the drones are manufactured in Japan, allowing for a rapid maintenance system .
Offered at a more reasonable price than conventional indoor inspection drones
Small and lightweight for easy portability
The Small Doctor series is extremely convenient to carry to each site, with a lightweight design that weighs just 1 kg including the device and case. The small load on the device makes it easy to carry even in small spaces, making it useful in many situations.
The industry's smallest model that fits in the palm of your hand
Aircraft + case 1 box 1kg
Extremely portable on-site
specification
機体 | Small Doctor 03 | Small Doctor Edge | Small Doctor Crawl |
|---|---|---|---|
Aircraft dimensions (W x L x H) | 335mm×290mm×80mm | 260mm×210mm×65mm | 182mm×182mm×92mm |
Aircraft weight | 520g | 430g | 400g |
Maximum takeoff load | 700g | 500g | 430g |
Additional payload | Up to 150g with separate optional development | None | None |
Maximum Flight Time Utilization | 16 minutes | 16 minutes | 12分 |
Maximum wind speed | 5m/s | 4m/s | 3m/s |
Utilizing the assumed distance | 70m | 70m | 70m |
Operating Temperature | 0-40℃ | 0-40℃ | 0-40℃ |
flight environment | Indoor environment only | Indoor environment only | Indoor environment only |
battery | Lithium-ion battery | Lithium-ion battery | Lithium-ion battery |
Equipped with LED illumination (left and right combined) | 2000lum | 600lum | 600lum |
Control Communication Method | Frequency 2.4 GHz | Frequency 2.4 GHz | Frequency 2.4 GHz |
Video communication system | Frequency 2.4GHz | Frequency 2.4GHz | Frequency 2.4GHz |
Video recording quality | FHD／30fps | FHD／30fps | FHD／30fps |
Sensor size | 1/2.3-inch | 1/2.3-inch | 1/2.3-inch |
Lens focal length | Approximately 2.2 mm | Approximately 2.2 mm | Approximately 2.2 mm |
Diagonal FOV (Field of View) | 118° | 118° | 118° |
F-stop | F2.7 | F2.7 | F2.7 |
Camera Tilt Angle | Upward 60° Downward 60° | Upward 60° Downward 60° | No tilt function |
Hovering Method | Vision Positioning | Vision Positioning | Vision Positioning |
Hovering accuracy range (vertical) | ±0.2m *Varies depending on environment | ±0.2m *Varies depending on environment | ±0.2m *Varies depending on environment |
Hovering accuracy range (horizontal) | ±0.2m *Varies depending on environment | ±0.2m *Varies depending on environment | ±0.2m *Varies depending on environment |
specification
Prices vary depending on the options configured, so please feel free to request a quote first.
*Small Doctor Crawl is only available as an annual subscription.
*When purchasing, there are additional services you will need to sign up for in addition to the cost of the device.
specification
Required for installation
Operation training contract
30,000 yen / person (excluding tax)
*Operators are required to attend at least one training session. *On-site training is available with a separate quote. *After the training session, our company's aircraft license will be issued (different from the national license).
Continuation required
Annual Operating Contract
Annual maintenance *Twice-yearly maintenance plan available
29,800 yen /machine (excluding tax)
Please check the terms of use for detailed maintenance conditions.
Aircraft license renewal fee
Separate quote required
Option
+Care Support
Continuation optional
Annual Operating Contract
150,000 yen /machine (excluding tax)
If you are not a member
In case of failure: Repair cost (charged) / Parts cost (charged)
* Shipped within 15 business days after the defective unit arrives
First failure: Completely free replacement
* Shipped within 5 business days after the defective unit arrives
Second or subsequent failure: Repair costs (free of charge) / Parts costs (charged)
* Shipped within 10 business days after the defective unit arrives
3D scanning
We work in collaboration with the BIM division of National Land and Public Consultants , a group company of ERI Holdings . We scan objects using tools such as Small Doctor and create highly accurate 3D models and point cloud data. We visualize complex structures for infrastructure inspections, surveying, disaster investigations, etc.
Advanced analytical technology improves operational efficiency and accuracy.
HANDS ON
Book a Hands-On Drone Experience
Drone operation experience schedule
We regularly hold " Small Doctor " operation experience sessions at our Kawasaki headquarters. Expert staff will be present, so even beginners can participate with confidence.
2026
2/4
(wed)
13：00～15：00
2026
2/12
(Thu)
13：00～15：00
2026
2/18
(wed)
13：00～15：00
2026
3/4
(wed)
13：00～15：00
2026
3/11
(wed)
13：00～15：00
2026
3/18
(wed)
13：00～15：00
VOICE
What Pilots Say
Large-scale plant business (site manager of equipment maintenance department)
It was my first time using a drone, and I was surprised at how stable and easy it was to control . I hope that this drone can be controlled by anyone other than me, and that its use will increase .
Plant Maintenance Division (Drone Inspection Department Site Supervisor)
The barriers to adoption of indoor inspection drones have been high, including the difficulty of learning to operate them and the high price of the drones. The Small Doctor hovers stably even indoors and is very easy to operate, allowing me to concentrate on my inspection work. The affordable price is also attractive. I would like to use this drone for dangerous work such as inspecting shafts, thereby enabling safer and more advanced inspections.
FAQ
Frequently Asked Questions
Can you perform an inspection?
Our partner pilots can handle even the most difficult situations.
Is it possible to hold an individual operation trial session?
We will charge you for transportation costs and staff support fees, but we can accommodate you anywhere in Japan.
Please feel free to contact us first.
I'm worried because I don't know much about drone laws.
Our certified pilots provide explanations at training sessions for purchasers.
Please contact us first.
Can I use subsidies?
Depending on the conditions, various subsidies may be available.
Please feel free to contact us.
Are contracts only available on an annual basis?
We have a sales partner system where products are divided into in stock and out of stock.
Please feel free to contact us.
For quotes and installation inquiries, please click here
Inquiries and quote requests
CONTACT
Please fill out this inquiry form and send it to us. A representative will contact you within 2-3 business days.
About us
COMPANY
ERI Robotics Co., Ltd.
Founded on 3/26/2021
CEO: Takafumi Fujimoto
Email: info@r-eri.jp
ACCESS
Shin Kawasaki Technical Center
7-7 Shin Kawasaki, KBIC 2F, Saiwai, Kawasaki, Kanagawa
〒212-0032
Niigata Office
1-1 Tenjin, PLAKA 3 KENTO, Chuo, Niigata City, Niigata
〒950-0917
Kumamoto Field Center
3-4-32 Hanazono, Nishi Ward, Kumamoto City, Kumamoto Prefecture
〒860-0072