10m TOF Laser Body Sensor for Automatic Door Systems | M-901
10m TOF Laser Body Sensor for Automatic Door Systems | M-901
10m TOF Laser Body Sensor — Automatic Door Activation System
Upgrade your automatic door system with this high-performance TOF (Time-of-Flight) Laser Body Induction Sensor. Using advanced 890nm infrared laser technology and TOF light-flight-time detection, this sensor delivers fast, precise, and reliable body detection up to 10 metres away — making it ideal for automatic sliding doors, access control systems, and commercial entrances. With IP67 waterproof protection and a wide operating temperature range, it performs dependably in both indoor and outdoor environments.
Key Features
- Advanced TOF Detection: Uses Time-of-Flight (TOF) light flight time lag principle for rapid, accurate presence detection.
- Long Range: Maximum detection range of 10 metres, with a minimum cut-off distance of 80 cm.
- Type I Eye-Safe Laser: 890nm infrared laser classified as Type I — safe for use in public and commercial spaces.
- Fast Response: Probe response time of 50 ms or less, ensuring smooth and immediate door activation.
- Dual Trigger Modes: Detects both moving and stationary objects/people for versatile application.
- IP67 Waterproof Rating: Suitable for exposed or semi-outdoor installations.
- Wide Voltage Compatibility: Operates on AC/DC 12–30V for flexible integration with existing systems.
- Relay Output: Signal output via normally open (NO) or normally closed (NC) relay for easy wiring.
- LED Status Indicators: Blue LED for standby; Red LED when an object is detected — simple at-a-glance monitoring.
- Durable Construction: Robust ABS and PC shell built to withstand demanding commercial environments.
Technical Specifications
| Detection Principle | TOF Light Flight Time Lag |
| Light Source | 890 nm Infrared Laser |
| Laser Category | Type I (Eye Safe) |
| Response Time | ≤ 50 ms |
| Detection Zone Diameter | 100 mm spot (detection range 2.8 m) |
| Maximum Detection Range | 10 m |
| Minimum Cut-Off Distance | 80 cm |
| Waterproof Rating | IP67 |
| Operating Temperature | -20°C to +60°C |
| Working Voltage | AC/DC 12–30V |
| Standby Current | 52 mA (at 12V) |
| Active Current | 74 mA (at 12V) |
| Signal Output | Relay Normally Open (NO) / Normally Closed (NC) |
| Trigger Mode | Mobile and Stationary |
| Status Indicators | Blue (Standby) / Red (Object Detected) |
| Shell Material | ABS, PC |
| Model Number | M-901 |
| Country of Origin | Made in China |
Who Is This For?
This TOF laser sensor is perfect for installers, building managers, and access control professionals looking to automate sliding or swing doors in commercial, retail, medical, or hospitality environments. Its broad detection range and reliable relay output make integration into existing door control panels straightforward and efficient.
For guidance on safe installation practices for electrical and sensor-based systems, refer to the OSHA Electrical Safety Guidelines.
Frequently Asked Questions
Q: What is TOF (Time-of-Flight) detection and why is it used in automatic door sensors?
A: TOF (Time-of-Flight) detection works by emitting a short pulse of infrared laser light and measuring the time it takes to reflect back from an object or person. This method is extremely fast and accurate, making the TOF laser sensor ideal for automatic door systems where rapid, reliable body detection is essential to ensure smooth and safe door operation.
Q: Is the 890nm infrared laser safe for use around people?
A: Yes. The laser used in this sensor is classified as Type I — the highest level of eye safety for laser devices. Type I lasers are considered safe under all normal conditions of use, meaning no special precautions are required for installation in public or commercial spaces.
Q: Can this sensor detect stationary people, or does it only respond to movement?
A: This sensor features dual trigger modes — it detects both moving and stationary objects. This ensures the door remains open when someone is standing in the detection zone, preventing accidental door closure.
Q: What does the IP67 waterproof rating mean for installation?
A: IP67 means the sensor is fully protected against dust ingress and can withstand temporary immersion in water up to 1 metre for 30 minutes. This makes it suitable for installation in covered outdoor areas, entryways exposed to rain or cleaning, and other demanding environments.
Q: What voltage supply does this sensor require?
A: The sensor operates on a wide voltage range of AC/DC 12–30V, making it compatible with most standard door controller power supplies without needing a separate voltage converter.