803502511 alarm annunciator for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Product Name: Electronic Siren
Part No.: 803502511
Applicable Model: XCMG ZL50G, ZL50GL Wheel Loader
Type: Electronic audible alarm device
Installation Position: Corresponding position on cab or frame (subject to actual vehicle configuration)
Function: Reverse/alarm status audible warning
Working Voltage: 24V
Wiring Method: Connector/terminal wiring
Mounting Method: Bracket fixation or bolted fastening
Protection Capability: Certain dust and splash resistance
Working Condition: Quarry mining, aggregate yard, heavy earthwork and construction projects

Applicable Scenarios

Widely used in quarry, aggregate yard, and earthwork construction sites with reversing warnings and mixed personnel-vehicle operations. It is a basic alarm accessory for ensuring site personnel safety.

Direct audible alarm function for operation safety
Emits an electronic alarm sound during reversing or alarm conditions, alerting the driver and surrounding personnel to equipment movement and reducing collision risk.

Manufactured to OEM electrical parameters for loader system match
Siren electrical parameters are designed for the loader 24V system, working when connected to the original circuit and reducing abnormalities from parameter mismatch.

Mounting matches original position for easy replacement
Mounting dimensions and interfaces follow the original cab/frame layout, requiring no mounting structure modification during replacement and shortening on-site repair time.

FAQ 

Q：When does an electronic siren need replacement?
A: Replace when the siren completely fails to sound, sounds hoarse or intermittent, is intermittent in operation, or the housing is damaged or terminals are corroded.

Q：Is siren failure always caused by the siren itself?
A: Not necessarily. Check corresponding fuses, relays, trigger switches (such as reverse gear switch), and wiring connectors first. Inspect the siren itself after confirming peripheral circuits are normal.

Q：What is the difference between 803502511 and 803502418 buzzer?
A: 803502511 is an “electronic siren” (Alarm Siren/Annunciator), while 803502418 is a “buzzer”, listed separately in the parts manual; functions and applications may differ, distinguish according to actual needs when purchasing.

Q：What to note during electronic siren installation?
A: Confirm the siren working voltage matches the original system (typically 24V). Orient the installation position reasonably, avoiding the cab or water-accumulation positions. Check wiring polarity and fix securely to prevent vibration loosening.

Q：How to maintain the electronic siren daily?
A: Regularly clean the siren housing and sound outlet to prevent mud blockage affecting sound. Check terminals for corrosion and looseness, and address abnormalities promptly.