FN-A503 Programmable MP3 Siren Horn with Triggers 30W Triggerable MP3 Horn Speaker for Vehicles and Industrial Control Systems

Features

1. 4 trigger inputs available and triggered by negative pulse (low-level) signal / ground.

    -Yellow wire: 1st trigger (K1), green wire: 2nd trigger (K2), blue wire: 3rd trigger (K3), white wire: 4th trigger (K4)

2. Built-in high quality MP3 player module with 30Watts class D amplifier.

3. Built-in 4MB flash memory, which is able to store total of 4 minutes long MP3 files of 128Kbps. 

4. Supports using a micro SD card as the extended memory.

5. Plug the included USB data cable into computer to upload sound files. 

    -it'll be detected as a USB flash drive on computer. No need any program/software.

6. Supports multiple functions/trigger modes.

7. The function/trigger mode of each trigger input can be set individually through using a configuration file.

8. Can be controlled with buttons, switches, relays, sensors, or equipment with alarm outputs (low-level signal).

9. Adjustable sound volume through the small blue potentiometer on the internal circuit board.

   -also possible to set any two trigger inputs to work as Vol+ and Vol- via the configuration file. 

10. Wide power input (12-24V DC) and stable performance.

11. Industrial grade design and strong anti-jamming capability.

12. Trigger wire length: about 50cm

13. USB cable length: about 74cm

Technical Parameters

1. Working voltage: DC 12-24V

2. Working current: ≥2000mA

3. Standby current: ≤10mA

3. Power consumption: ≤30W

4. Memory size: 4Mbytes

5. Audio format: MP3 

6. Sound pressure level: ≤125dB

Dimensions

About the Internal Circuit Board （MP3 Player Module）

Example of Wiring Connections

Note: there is an additional black wire (GND) working as COM. It’s also possible to directly trigger the horn through a PLC/industrial controller that gives low signal. When it works with a PLC/industrial controller, ground needs to be shared in advance.