ACSL SOTEN Introduces 64MP Thermal Payload for Operators Seeking Alternatives to DJI
ACSL Launches SAMO Thermal Payload for SOTEN Drone
ACSL has introduced SAMO, a dual optical-thermal swappable payload designed for its SOTEN drone, targeting the U.S. public safety and inspection markets. The SAMO payload features Teledyne FLIR’s Hadron 640R module, which combines a 64-megapixel visible camera with a 640×512 radiometric Boson thermal sensor. This product is compliant with the National Defense Authorization Act (NDAA) and is free from International Traffic in Arms Regulations (ITAR).
Key Features of SAMO
SAMO integrates into SOTEN’s one-touch swappable payload bay, which also accommodates four other camera options: a standard 20MP camera, a 2.5x optical zoom camera, a multispectral camera, and a FLIR Boson 320 combo. The Hadron 640R module provides:
- 26mm equivalent focal length and F2.3 aperture for optical imaging
- Full radiometric data from the thermal sensor, allowing each pixel to carry a calibrated temperature value with an accuracy of ±5°C within the 0°C to 100°C range
- Thermal sensitivity below 20mK
The payload weighs approximately 56 grams and has an IP54 ingress protection rating. Its gimbal allows for ±90° pan, -90° to +10° tilt, and ±45° roll.
Operational Flexibility and Limitations
The 20x zoom capability of the visible camera enhances operational efficiency, particularly in search-and-rescue scenarios, enabling operators to identify heat signatures from a distance before approaching. However, it is important to note that the video resolution for the FLIR Hadron 640R is currently listed as “TBD,” and the Multi-Spectral Dynamic Imaging (MSX) technology has not yet been released. ACSL has indicated that MSX is a future capability dependent on firmware updates.
Overview of SOTEN’s Capabilities
The SOTEN drone features a foldable airframe, is manufactured in Japan, and is ISO15408 certified. It offers a flight time of approximately 25 minutes with payload and 29 minutes without. The drone is equipped with obstacle avoidance technology and supports dual-band radio communications with AES-256 encryption. Since its U.S. launch in January 2024, SOTEN has been utilized for utility infrastructure inspections and has seen increased distribution efforts through partnerships.
SAMO Camera Specifications
| Spec | SAMO (FLIR Hadron 640R) |
|---|---|
| Optical Resolution | 64 MP |
| Optical Sensor Size | 1/2 inch |
| Optical Focal Length | 26 mm equivalent |
| Optical Aperture | F2.3 |
| Optical Zoom | 20x |
| Thermal Resolution | 640 × 512 |
| Thermal Sensor | FLIR Boson (radiometric) |
| Thermal Pixel Pitch | 12 µm |
| Thermal Sensitivity | <20 mK typical |
| Temperature Accuracy | ±5°C (0°C to 100°C range) |
| Thermal FoV | H32°, V26°, D40° |
| Thermal Focal Length | 55 mm equivalent |
| Thermal Aperture | F1.0 |
| Video Resolution | TBD |
| Gimbal Pan | ±90° |
| Gimbal Tilt | -90° to +10° |
| Gimbal Roll | ±45° |
| Payload Weight | ~56 g |
| Ingress Protection | IP54 |
| NDAA Compliant | Yes |
| ITAR Free | Yes |
| MSX Imaging | Roadmap — not yet available |
Conclusion
ACSL’s SAMO payload represents a significant advancement in thermal imaging technology for drone applications, particularly for public safety and utility inspections. While the product is now shipping, the delay in the availability of certain features, such as MSX imaging, may impact buyer confidence. Future updates regarding specifications and capabilities are anticipated as the company continues to develop its product offerings.