This product is a Heads-Up Display (HUD) device integrated into the breathing mask, featuring real-time pressure monitoring through a pressure sensor that collects gas pressure data from the cylinder. The data is wirelessly transmitted to the receiver using a unique signal technology, allowing users to monitor remaining air supply without looking down at the pressure gauge, enhancing operational safety and efficiency.
Model: HY-HUD-01
Explosion-proof Marking: Ex ia IIC T4 Ga
Ingress Protection Rating: IP67
Operating Temperature: -35°C to +60°C
Power Supply: 2 × 1.5V AAA alkaline batteries in series (*Strictly prohibit battery replacement in explosive gas atmospheres*)
Wireless Transmission Power: ≤4mW
Compliance Standards
- GB/T 3836.1-2021 (Explosive atmospheres – Part 1: Equipment – General requirements)
- GB/T 3836.4-2021 (Explosive atmospheres – Part 4: Equipment protection by intrinsic safety "i")
Key Features
1. Multi-Level Pressure Indication
- Three pressure indicator lights on the left side display cylinder pressure status through red, yellow, and green LEDs:
- Green Steady On: Cylinder pressure 30~10 MPa (sufficient air)
- Yellow Steady On: Cylinder pressure 10~6 MPa (warning level)
- Red Flashing: Cylinder pressure <6 MPa (low pressure alarm, immediate evacuation required)
2. Multiple Alarm Modes
- When cylinder pressure drops below 6 MPa, the receiver automatically triggers vibration alarm, while the buddy light and transmitter red LED flash simultaneously, ensuring users are alerted through multiple channels.
- Low battery alarm: Left side yellow LED flashes to indicate low battery, reminding users to replace batteries promptly.
3. Intelligent Wireless Connection
- Automatically activates when cylinder is opened; automatically shuts down when cylinder is closed—no manual operation required.
- Supports manual power-on and one-button pairing via the code-matching button under no-pressure conditions.
- Utilizes advanced low-power Bluetooth wireless transmission technology with strong anti-interference capability and stable signal.
- When signal between transmitter and receiver is lost, the blue LED on the upper left side of the receiver flashes rapidly, automatically searching for and reconnecting to the signal.
4. Adaptive Brightness Control
- Built-in light sensor automatically adjusts alarm LED brightness according to ambient light conditions, ensuring clear visibility without glare.
5. Extended Battery Life
- Continuous operation time: up to 200 hours
- Continuous standby time: >18 months
- Deep sleep mode standby time: ≥36 months
6. User-Friendly Design
- Receiver integrated inside the mask, leaving hands free without obstructing vision
- Alkaline battery power supply—safe, portable, and easy to replace
- One-button pairing for simple and convenient operation
- At-a-Glance Monitoring: Three-color LED lights intuitively display pressure status without looking down at the gauge
- Multi-Layered Protection: Light, vibration, and buddy light alarms ensure no missed safety alerts
- Smart and Effortless: Auto start/stop, adaptive brightness, and automatic signal search reduce manual intervention
- Long-Lasting Reliability: Extended standby time and low-power design meet the demands of prolonged missions
- Intrinsically Safe: National explosion-proof certified for safe use in flammable and explosive environments
Main Components
- Pressure Sensor and Transmitter (mounted on cylinder valve)
- HUD Receiver Display (integrated inside the mask)
- Buddy Light Module
- Battery Compartment (2×AAA)
Widely used in firefighting and rescue, petrochemical industry, subway tunnels, military chemical defense, mine rescue, industrial safety, and other fields. Particularly suitable for respiratory protection operations in high-risk environments involving flammable gases, heavy smoke, oxygen deficiency, and explosive atmospheres.
