I. Requirements Analysis

In complex and ever-changing fire rescue scenarios, the safety and efficient operations of firefighters are of paramount importance. To ensure firefighters can be accurately identified and located in environments filled with thick smoke, darkness, or limited visibility, thereby enhancing team coordination efficiency and self-rescue/mutual-rescue capabilities during emergencies, we have meticulously developed the Firefighter Positioning Light. This product is designed to provide clear, stable positioning guidance through a high-brightness, highly visible light source combined with specific flashing patterns, while meeting the demands for durability and portability in extreme working conditions.

II. Product Features

1. High Brightness and Multi-Mode: Utilizes high-efficiency LED light sources with luminance no less than 300 cd/m², ensuring clear visibility at long distances. Supports constant-on and flashing modes, with adjustable flashing frequency (1 Hz to 2 Hz) to adapt to diverse rescue scenarios.

2. Extended Battery Life: Equipped with a built-in rechargeable battery and battery charge/discharge protection circuitry, ensuring safe operation while delivering continuous flash mode operation for no less than 100 hours and steady-on mode operation for no less than 20 hours, meeting the demands of extended rescue missions.

3. Rugged and Durable: The housing is constructed from high-strength, corrosion-resistant materials and undergoes rigorous quality testing to ensure stable and reliable performance in harsh environments. It meets the IP65 protection rating, effectively resisting water splashes, dust, and other contaminants.

4. Lightweight and Portable: Featuring a compact overall design weighing no more than 150g, it offers comfortable wear without adding extra burden to firefighters, enabling quick donning and easy transport.

5. Safe and Reliable: Features high insulation resistance (≥50MΩ) and excellent withstand voltage performance (500V±50V, 60s±5s). Validated through wet-heat testing to ensure safe operation even under extreme conditions.

III. Application Scenarios

Firefighter locator lights are widely used in various emergency rescue scenarios such as firefighting operations, earthquake relief efforts, and mountain/forest search and rescue missions. They serve not only as clear indicators of a firefighter's identity and location but also as vital tools for team coordination and command dispatch. In nighttime, smoke-filled, or low-visibility environments, these locator lights significantly enhance rescue efficiency and ensure firefighter safety.

IV. Product Specifications

Serial Number	Project Name	Technical Specifications
1	Operating temperature range	-25°C to 70°C
2	Relative Humidity in the Work Environment	30%～85%
3	Power Supply	Rechargeable battery equipped with a battery charge/discharge protection circuit
4	Appearance and Assembly Quality	Surface free of defects, markings clear and complete. Assembly intact, fastenings secure with no looseness, wearing device flexible and reliable.
5	Luminous intensity	Not less than 300 cd/m²
6	Flash frequency	1 Hz to 2 Hz
7	Continuous operating time	Flash type: Not less than 100 hours
		Continuous operation: Not less than 20 hours
		Weight: Not exceeding 150g
8	Insulation Resistance	Initial value: Not less than 50 MΩ
		After humidity and heat testing: Not less than 10 MΩ
9	Pressure Resistance	Withstands a withstand voltage test of 500V ± 50V at 50Hz ± 0.5Hz for 60 seconds ± 5 seconds without arcing or breakdown, and operates normally after testing.
10	Enclosure Protection Rating	Complies with GB4208-2008 IP65 standard.