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BK4 Red-Blue Warning Projector with DJI EPORT Interface and 5-Second Quick Mount for M4 Series UAVs Featuring IP55 Protection

BK4 Red-Blue Warning Projector with DJI EPORT Interface and 5-Second Quick Mount for M4 Series UAVs Featuring IP55 Protection

MOQ: 1
Delivery Period: 2 weeks
Payment Method: L/C,D/A,D/P,T/T
Detail Information
Brand Name
AOISUN
Product Model:
BK4 Red-Blue Warning Projector
Electrical Interface:
DJI EPORT
Dimensions:
≤85×75×35 Mm
Power Supply Voltage:
DC 9-17V
Light Parameters:
120° Angle, 2 Channels Of Red-blue Strobe Lights
Total Power:
≤25W
Projection Positions:
2 Positions (2-stage Projection Supported For Separate Deployment Of 2 Payloads)
Working Temperature:
-20℃ To +50℃
Protection Level:
IP55
Compatibility:
DJI Matrice M4 Series UAVs (via DJI EPORT Interface)
Highlight:

DJI EPORT Interface Warning Projector

,

5-Second Quick Mount Drone Payload

,

IP55 Protection UAV Strobe Light

Product Description
BK4 Red-Blue Warning Projector
2-in-1 Strobe Light & Dual-Stage Projector for DJI M4 Series UAVs
The BK4 Red-Blue Warning Projector is a high-performance 2-in-1 UAV-mounted accessory that integrates dual-channel red-blue strobe lighting and a precision dual-position projectile launcher into a single compact unit. Engineered for professional tactical, emergency response, and search and rescue missions, this versatile device delivers enhanced situational awareness and flexible payload deployment capabilities while maintaining seamless compatibility with DJI Matrice M4 series UAVs via the dedicated DJI EPORT interface.
Dimensions: ≤85×75×35 mm
Power Supply: DC 9-17V
Power Consumption: ≤25W
Protection Rating: IP55
Operating Temperature: -20℃ to +50℃
Key Features & Capabilities
  • 2-in-1 Integrated Design: Combines dual-channel red-blue strobe lighting and dual-position projectile launcher in one compact unit
  • DJI EPORT Interface: Seamless integration with DJI Matrice M4 series UAVs
  • Dual-Channel Strobe Lighting: Two independent 120° wide-angle red-blue strobe channels with 360° visibility
  • Advanced 2-Stage Projection: Dual-position launcher enables separate deployment of two payloads with strap and hanging line projection modes
  • 5-Second Quick Installation: Bottom quick-mount design requires no UAV modifications
  • Rugged Construction: IP55 protection and wide temperature range for harsh environments
  • Lightweight & Efficient: Minimal payload burden with optimized power consumption
Applications
  • Emergency Search and Rescue: Mark UAV position and deploy emergency supplies to stranded individuals
  • Law Enforcement Tactical Operations: Area cordoning and deployment of marking/surveillance equipment
  • Disaster Relief Deployments: High-visibility warning and emergency supply delivery to isolated areas
  • Night Patrol & Security: Position marking and monitoring device deployment for enhanced security
  • Maritime Rescue Operations: Life buoy and signaling device delivery with 360° visibility
  • Mountain & Remote Area Rescue: Emergency shelter and GPS beacon deployment in low-visibility conditions
  • Industrial Site Emergency Response: Hazard area cordoning and sensor equipment deployment
Why Choose BK4 Red-Blue Warning Projector?
The BK4 represents cutting-edge engineering specifically designed for DJI Matrice M4 series UAVs, providing a comprehensive solution for critical tactical and emergency missions. Its integrated design eliminates the need for multiple accessories while reducing UAV payload burden. With seamless DJI EPORT integration, 360° visibility, advanced projection capabilities, and rugged environmental resistance, the BK4 ensures mission success in the most demanding scenarios.
Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

D
David Wright
United Kingdom Feb 24.2026
We’ve integrated the AOISUN DS4 Warning Screen into our DJI UAV fleet for traffic control and public safety missions, and it’s exceeded all expectations. The 4-fold hollow design is a marvel—at just 240g, it barely impacts flight time while delivering a massive 23.4-inch display. The 1024 full-color LEDs and 120° light angle make warnings visible from 1000m away, which is critical for highway accident scenes and crowd control. We love the flexible control options (PSDK, app, WeChat mini-program) and multiple flash modes—dual-color alternating flashes cut through fog and daylight perfectly. Installation was a breeze with the quick-release screw mount, and it paired seamlessly with our DJI SDK in minutes. It operated reliably in -5°C winter conditions, proving its durability. This is the most versatile UAV visual alert system we’ve tested—highly recommended for emergency services!
M
Mark Stevens
Canada Jan 12.2026
This AOISUN MYUAV fire bucket is a game-changer for UAV firefighting! Its IP68 waterproof and 800°C high-temperature resistance make it reliable in extreme conditions, while the multi-layer safety protection ensures uninterrupted mission execution. The easy installation and one-key control via the remote controller save a lot of time, and the compatibility with DJI FlyCart 30 and other heavy-load UAVs is a huge plus. The valve response time of ≤0.6s is impressive, allowing precise fire extinguishing. Highly recommended for forest fire and high-rise building fire suppression!
E
Elīna Liepa
Latvia Dec 30.2025
Lightweight at only 1.05kg, this flamethrower barely impacts our M350’s flight time. The foldable design saves 40% storage space, and the high-pressure pump delivers stable flames even in 10m/s winds. Perfect for removing wasp nests and industrial attachments—no more risky high-altitude climbs!
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