Introduction of Wireless Infrared Beam Sensor
Wireless Infrared Beam Sensor is a high-performance active photocell designed to provide reliable obstacle detection and safety control for automatic gates, sliding doors, and perimeter security systems. With its battery-powered transmitter and IP55 weather-resistant housing, this sensor offers a convenient wire-free solution for both indoor and outdoor installations.
How It Works
The sensor consists of a transmitter and a receiver. The transmitter emits an invisible 940nm infrared beam toward the receiver. When a vehicle, person, or object passes through and breaks the beam, the sensor instantly sends a relay signal to the gate controller, triggering an action such as stopping, reversing, or preventing the gate from closing-3-7. This ensures safe operation by preventing accidents and vehicle damage.
Key Features
1. Wireless and Wiring-Free, 2-Year Extended Battery Life
The Wireless Infrared Beam Sensor transmitter requires only two AA alkaline batteries, providing approximately two years of battery life. No need to dig up roads or run cables through walls, making this wireless beam sensor especially suitable for scenarios where wiring is difficult, such as old door renovations, paved surfaces, or historic buildings.
2. 15-Meter Detection Distance, Interference-Free and Precise Trigger
With 940nm pulse infrared technology, the Wireless Infrared Beam Sensor effectively suppresses interference from sunlight, vehicle headlights, and other ambient light, achieving a maximum detection distance of 15 meters. Alarm duration is adjustable from 0 to 23 seconds to adapt to different controller response speeds.
3. IP55 Waterproof and Dustproof, Durable for Outdoor Use
The Wireless Infrared Beam Sensor features an IP55-rated housing that can withstand rain and low-pressure water jets, with an operating temperature range of -10°C to +55°C (some configurations can reach +70°C). The polycarbonate material is impact-resistant and anti-aging, ensuring reliable performance even with long-term outdoor installation.
4. Compatible with Mainstream Access Control Systems
The Wireless Infrared Beam Sensor provides relay output with both normally open (NO) and normally closed (NC) contacts, with a capacity of 30VDC/3A or 250VAC/3A. This allows direct connection to automatic sliding gates, swing gates, barrier gates, and perimeter alarm systems.
5. Low Battery Warning with Buzzer for Worry-Free Maintenance
When battery power is low, the Wireless Infrared Beam Sensor transmitter emits a buzzer alert to remind you of timely replacement, preventing safety protection failure due to power outages.
Applications
1. Safe Automation for Automatic Sliding Gates
The Wireless Infrared Beam Sensor is widely used in automatic sliding gates for residential driveways, commercial entrances, and industrial facilities. It creates an invisible safety curtain across the gate path. When a vehicle, person, or object interrupts the beam the gate immediately stops or reverses, preventing impact, pinching, or property damage. This ensures compliance with gate safety standards while eliminating complex wiring.
2. Reliable Obstruction Detection for Swing Gates
In swing gate applications, the sensor provides essential safety protection by monitoring the gate's swing radius. When the infrared beam is interrupted during closing or opening, the operator instantly stops movement. This prevents accidents involving children, pets, vehicles, or obstructions. Its wireless design makes retrofitting existing swing gates quick and cost-effective, even where concrete or pavement prevents trenching for wires.
3. Vehicle Protection for Barrier Gates & Parking Systems
For parking lots, toll booths, and access control barriers, the Wireless Infrared Beam Sensor serves as a safety trigger rather than a primary vehicle detector. It creates a low-mounted beam to detect vehicles lingering under a descending barrier arm. Upon beam interruption, the system triggers an immediate safety stop, preventing expensive vehicle damage and liability claims. This solution is particularly valuable for unattended parking facilities.
4. Invisible Perimeter Security for Homes & Businesses
The sensor works as an active intrusion detection barrier for perimeter security applications - including fence lines, wall tops, rooftop boundaries, and temporary construction sites. Unlike passive infrared (PIR) motion sensors that detect heat signatures, this beam sensor creates a precise, tamper-resistant optical fence. When an intruder crosses and simultaneously blocks two or more beams, the wireless signal triggers alarms, spotlights, or CCTV recording. Its battery-powered operation allows deployment in remote areas without power access.
5. Obstruction Detection for Garage Doors & Industrial Doors
In automated garages, warehouses, and loading docks, the Wireless Infrared Beam Sensor provides reliable obstruction detection for overhead doors, roller shutters, and high-speed industrial doors. Mounted near floor level across the door opening, it detects vehicles, forklifts, pallets, or personnel before the door closes. The wireless link simplifies installation in retrofit projects where running sensor wires through concrete or metal structures is impractical, while the IP55 housing withstands dust and humidity common in industrial environments.
Parameter
| Item | Specification |
|---|---|
| Model No. | AX-HW09 |
| Operating Voltage | Receiver: 12–24V DC / Transmitter: 3V (2 x AA alkaline batteries) |
| Installation Environment | Indoor / Outdoor |
| Application | Home security / Access control systems |
| Detection Range | 15m |
| Alarm Duration | 0–23 seconds (adjustable) |
| Alarm Output | Relay contact output |
| Contact Capacity | 30VDC / 3A max; 250VAC / 3A max |
| Battery Life | Approx. 2 years |
| Wavelength | 940nm |
| Modulation Frequency | Pulse |
| Ingress Protection | IP55 |
| Dimensions | 136 × 54 × 32 mm |
Certificate
FAQ
Q1: What is a wireless infrared beam sensor? How does it work?
A: It is a high-performance active photoelectric sensor, typically consisting of a battery-powered transmitter and receiver. The transmitter emits multiple beams of infrared light invisible to the human eye, forming a "light wall." When a person, vehicle, or object passes by and simultaneously blocks two or more adjacent beams, the receiver determines it as an intrusion or obstacle and sends a trigger signal wirelessly to the alarm control panel or automatic door controller. It is widely used for obstacle detection and security control in automatic doors, sliding doors, and perimeter security systems.
Q2: Is this sensor suitable for installation on automatic doors? Is additional wiring required?
A: Yes, the Wireless Infrared Beam Sensor for Auto Gate is specifically designed for automatic door security in residential and industrial settings. It uses a battery-powered transmitter and wireless communication, eliminating the need for signal cables between the door and the control box, significantly reducing installation difficulty. It also provides reliable obstacle detection, preventing people and vehicles from being trapped by the door, meeting safety standards.
Q3: What is the difference between a wireless beam sensor and a regular passive infrared sensor (PIR)?
A: Application Scenarios: Beam sensors are primarily used in outdoor automatic doors, driveways, fences, and other scenarios requiring active obstacle detection; PIR sensors are mostly used for indoor human movement detection.
Working Principle: Beam sensors are active beam sensors; an alarm is triggered when the light is blocked. PIR sensors passively sense changes in human body temperature.
Installation Ease: Wireless beam sensors require no complex wiring, making them particularly suitable for already renovated or difficult-to-wire sites.
Q4: Is the Waterproof and Dustproof Rating Important for Outdoor Installation? Is IP55 Sufficient?
A: Very Important. Outdoor environments expose sensors to rain, dust, and direct sunlight. An IP55-rated waterproof and dustproof housing is sufficient to withstand daily rain and dust, ensuring long-term stable operation of the sensor in outdoor scenarios such as automatic doors and fences.
Q5: What's the most difficult step during installation? How do you ensure the transmitter and receiver are aligned?
A: The most difficult part is optical axis calibration. The solution is to use the sensor's mounting mode (buzzer or voltage indicator)-the more rapid the buzzer sound or the brighter the indicator light, the better the alignment. It's recommended to use a laser pointer or refer to the mounting slots included with the product. Once calibration is complete, due to the wireless design, there's no need to deal with signal cable routing.
Q6: How Long Does the Battery Last? How Do I Know When the Battery is Low?
A: Due to their low-power design, the batteries of high-quality wireless infrared beam sensors typically last 2–5 years (depending on the trigger frequency). When the battery voltage is low, the sensor sends a low-battery signal to the host or controller, and the LED indicator on the device will flash continuously or remain lit to remind you to replace it. For automatic door applications, it is recommended to check the battery status annually.
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