Firehouse Technology BK4 Dual Payload Delivery System with Emergency Light for DJI Matrice 4 Drone

SKU: FHTBK4 MFR: BK4
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Key Features

  • Effortlessly expand your DJI Matrice 4 drone's capabilities with this versatile dual payload delivery system.
  • Experience enhanced functionality with two independent hooks, each supporting up to 3.31 lbs for diverse missions.
  • Gain peace of mind with the integrated emergency light, ensuring visibility and safety during night operations.
  • Enjoy seamless control through DJI Pilot, thanks to the system's robust DJI PSDK-based design.
  • Benefit from IP55 water resistance, providing reliable performance in various environmental conditions.
  • Discover new possibilities for your drone, from search and rescue to creative aerial drops.
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Temporarily On Backorder?Expected Availability: 11/2025
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Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
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Firehouse Technology BK4 Specifications

  • Color

    Blue

  • Compatibility

    DJI Matrice 4 Drone (4T/4E)

  • Water-proof

    IP55

  • Hook

    2

  • Payload

    Each Hook: 3.31 lbs (1.5kg)
    Total: 6.61 lbs (3kg)

  • Control

    Developed based on DJI PSDK, controllable via DJI Pilot

  • Dimension

    3.35 x 2.95 x 1.38" (85 x 75 x 35mm)

  • Weight

    2.65 oz (75g)

About Firehouse Technology BK4

Upgrade your DJI Matrice 4T or Matrice 4E with a versatile, plug-and-play air drop system engineered for professional delivery and mission support. This lightweight system adds precision payload release and combined red/blue strobe lighting in one streamlined package.

Built on DJI's Payload SDK, operators can control drop functions directly through DJI Pilot, making aerial supply drops, equipment transport, or safety missions more efficient and precise. With a maximum payload of 1.5 kg per hook and a total of 3 kg across both hooks, you can deliver critical supplies or deploy equipment exactly where it's needed.

Designed with safety in mind, the system includes abnormal status alerts, water-resistant construction (IP55), and an easy, tool-free installation that won't damage your drone.

Applications
• Emergency supply drops to hard-to-reach areas
• Search and rescue: deliver flotation devices, radios, or rescue lines
• Utility or field operations: transport tools or sensors
• Public safety missions needing visible strobe signaling and payload release

Features
• Combined red/blue strobe lights and drop release system (2-in-1)
• Dual hooks for simultaneous mounting of two payloads
• Tool-free bottom installation - non-destructive, plug and play
• Abnormal status alerts for operational safety
• Power-free mounting and release capability

Firehouse Technology BK4 Features

  • Lightweight build: only 75g, compact at 85 x 75 x 35mm
  • IP55 waterproof rating for reliable use in varied weather
  • Dual hook design: carry two payloads simultaneously
  • 1.5kg maximum per hook, 3kg combined capacity
  • Integrated red/blue strobe lights enhance visibility and mission signaling
  • DJI PSDK integration: control directly through DJI Pilot
  • Tool-free, non-destructive installation-mount and remove in seconds
  • Power-free mounting and release operation for safety and efficiency
  • Automatic abnormal status alerts during use

Warranty Information

This product has a limited warranty of 3 months.

Key Features

  • Effortlessly expand your DJI Matrice 4 drone's capabilities with this versatile dual payload delivery system.
  • Experience enhanced functionality with two independent hooks, each supporting up to 3.31 lbs for diverse missions.
  • Gain peace of mind with the integrated emergency light, ensuring visibility and safety during night operations.
  • Enjoy seamless control through DJI Pilot, thanks to the system's robust DJI PSDK-based design.
  • Benefit from IP55 water resistance, providing reliable performance in various environmental conditions.
  • Discover new possibilities for your drone, from search and rescue to creative aerial drops.

What's in the box:

  • Firehouse Technology BK4 Dual Payload Delivery System with Emergency Light
  • Firehouse Technology 90 Day Limited Warranty