CZI LP35 Searchlight & Broadcast System for Matrice 300/350

The CZI LP35 is a combined searchlight, loudspeaker, and emergency-flasher payload for the DJI Matrice 300 RTK and Matrice 350 RTK. It mounts to the aircraft through the M300/M350 OSDK interface and gives a single mission one tool for two of the most common public-safety drone tasks: putting a high-intensity light on a target below, and broadcasting voice or pre-recorded audio to the people in the scene. A 60 W LED produces approximately 6,000 lumens with a 13° beam that illuminates up to 150 m, while a 125 dB-at-1-m loudspeaker reaches an effective broadcast distance of about 400 m. Integrated red and blue flasher lights give the aircraft a recognizable emergency-vehicle visibility signature.

Combined airborne searchlight, loudspeaker, and emergency flasher for the DJI Matrice 300 RTK and Matrice 350 RTK. ~6,000 lumens, 150 m illumination height, 125 dB-at-1-m audio, ~400 m broadcast range, IP54.

Features

• One payload covers two core public-safety functions: high-intensity searchlight and full-featured airborne loudspeaker, mounted on a single OSDK accessory rather than two separate payloads
• 60 W LED searchlight producing approximately 6,000 lumens with a 13° tight beam, illuminating a 34 m spot diameter and ~917 m² effective area at 150 m altitude (manufacturer lab data)
• Built-in emergency flasher with red, blue, and combined red-and-blue flash modes for high-visibility public-safety operations, search marking, or perimeter signaling
• 125 dB-at-1-m loudspeaker with an effective broadcast distance of approximately 400 m, supporting four audio modes: real-time voice from the controller, uploaded voice recordings, MP3 audio file playback, and text-to-speech
• Mounts via the DJI M300 RTK / M350 RTK OSDK payload interface and integrates with DJI Pilot 2 for in-flight control of light, flasher, and audio without an external control box
• IP54 ingress protection across a -20 °C to 50 °C (-4 °F to 122 °F) operating range, sized for sustained field operation in adverse weather
• Compact 185 × 175 × 95 mm form factor at approximately 550 g, well within the M300 / M350 payload envelope without dominating the available margin
• Rated total power up to 90-96 W (varies by configuration), drawn from the aircraft through the standard OSDK power and data interface

Specifications

Operating modes

• Searchlight (steady). Steady high-intensity beam from the 60 W LED for sustained illumination of a target, search area, or scene below the aircraft. Used for night search and rescue, perimeter watch, tower or substation inspection, and overhead area lighting for ground crews.
• Emergency flasher. Red, blue, or alternating red-and-blue flash modes that give the aircraft an emergency-vehicle visibility signature. Common uses include scene-management signaling, dispersal or evacuation flashing, and aircraft visibility in mixed airspace.
• Real-time voice broadcast. Speak into the controller microphone and the loudspeaker broadcasts your voice live through the aircraft. Used for evacuation announcements, dispersal communication, search callouts, and on-scene direction.
• Recorded broadcast. Pre-record voice messages into DJI Pilot 2 and trigger playback in flight. Useful for repeating standard warnings or instructions without tying up an operator's voice.
• MP3 file playback. Load MP3 audio files and play them through the loudspeaker. Supports multilingual messaging, recorded crowd-management content, or other prepared audio.
• Text-to-speech. Type a message into DJI Pilot 2 and the loudspeaker reads it aloud. Useful when a typed prompt is faster than recording or speaking live.

Who this is for

• Public-safety agencies. Police, fire, search-and-rescue, and emergency-management programs running M300 RTK or M350 RTK aircraft for night operations, missing-person searches, scene management, and incident response
• Fire-service crews illuminating staging areas, access routes, or active scenes from above while simultaneously broadcasting evacuation or coordination messages to people on the ground
• Law-enforcement operations needing a single-payload solution for night surveillance, dispersal communications, and traffic or scene management
• Industrial and infrastructure security teams running perimeter checks and broadcasting warnings to intruders, on-site personnel, or contractors at facilities, substations, or remote sites
• Wildlife and animal-management operators using the spotlight to locate animals at night and the loudspeaker for hazing, deterrence, or relocation calls
• Emergency-management programs conducting overnight damage assessment, area illumination during disaster response, and public announcements in evacuation zones

What's included

• 1 × CZI LP35 Searchlight and Broadcast System
• Mounting hardware for the DJI M300 RTK / M350 RTK OSDK interface
• Quick-start documentation

Please note: The CZI LP35 is built for the DJI Matrice 300 RTK and Matrice 350 RTK. It is not compatible with the Matrice 30 Series (which uses the smaller CZI LP12 Speaker and Spotlight), the Matrice 4 Series (which uses the DJI AL1 Spotlight and AS1 Speaker), the Matrice 400, the Mavic 3 Enterprise, or any other DJI aircraft. The aircraft, batteries, controller, and any other payloads are sold separately.

Installation and operational notes

• The LP35 attaches to the M300 / M350 OSDK payload interface. Follow the procedure in the LP35 user manual and the DJI M300 / M350 user manual to mount the payload and confirm the connection before powering on the aircraft.
• Verify the payload is recognized in DJI Pilot 2 before takeoff. The LP35 should appear as an addressable payload with light, flasher, and audio controls accessible during flight.
• Plan for reduced flight time when the LP35 is installed. The payload adds approximately 550 g to the airframe and draws meaningful power from the aircraft during use, particularly with both light and audio active at high output.
• Aim the searchlight responsibly. Directing a high-intensity beam into the eyes of pilots, drivers, or pedestrians can cause real safety hazards; agencies should follow established SOPs for aerial illumination, especially near roadways and aviation operations.
• Confirm local regulations on drone-mounted loudspeakers and emergency-color flashing lights before deployment. Some jurisdictions restrict the use of red/blue flashing lights to authorized emergency vehicles; verify your agency's authority to operate these features on a UAS before flying with them active.
• Inspect the payload before every flight, including the lens cover, speaker grille, and mounting interface. IP54 protection assumes the housing is intact and properly seated.

Operational and legal considerations: Drone-mounted loudspeakers and emergency-color flashing lights are regulated differently across U.S. states and localities. Public-safety, law-enforcement, and emergency-management operators should follow their agency's standard operating procedures for aerial illumination, audio broadcasts, and emergency lighting. Commercial use of red and blue flashing lights or airborne loudspeakers for advertising or non-emergency purposes is restricted in many jurisdictions. Confirm local rules before deploying.

FAQ