Dongfeng KR truck parts One click Alliance call switch assembly 3750850-C5100

Built for the fast-paced needs of long-haul logistics, the switch features an intuitive one-click operation that streamlines communication. It integrates three dedicated function buttons: “Alliance Call” (connects to pre-bound fleet trucks), “Dispatch Call” (directs to fleet control center), and “Emergency Call” (links to 12122 road rescue and local emergency services). The large, convex buttons (20mm diameter) with tactile feedback allow operation even with gloved hands, and LED indicators (green for idle, red for calling, blue for connected) provide clear status prompts. Compared to traditional manual dialing, this design reduces call setup time from 60 seconds to 2 seconds, significantly improving coordination efficiency for alliance convoys and emergency response speed

Engineered to maintain reliable communication across diverse driving environments, the switch assembly leverages dual-module communication support (4G LTE + Beidou short message). It automatically switches to Beidou short message service when 4G signals are weak (e.g., remote mountainous areas or desert highways), ensuring emergency calls and basic status messages are transmitted without interruption. The internal signal amplifier boosts reception sensitivity by 30% compared to standard on-board communication devices, maintaining stable connections even in areas with signal strength as low as -110dBm. The switch also supports voice encryption (AES-256 algorithm) for alliance calls, preventing information leakage about cargo routes and schedules

Designed to endure the harsh environment of truck cabs (vibration, temperature fluctuations, dust), the switch assembly boasts exceptional structural durability. The housing is made of flame-retardant ABS+PC alloy (UL94 V-0 rating) with a sealed structure, achieving IP65 waterproof/dustproof protection. Internal components use high-temperature resistant plastics (operating range -40℃ to 85℃), maintaining performance in northeast China’s frigid winters and southwest China’s hot summers. The switch withstands 500,000 button presses (far exceeding the 100,000-cycle industry average) and 20g vibration loads (5-2000Hz, ISO 16750-3) without failure. Gold-plated connector pins resist oxidation and corrosion, ensuring stable signal transmission even in high-humidity environments

Optimized for fleet maintenance efficiency, the switch assembly features plug-and-play installation and built-in diagnostics. The 6-pin waterproof connector plugs directly into the dashboard wiring harness, and the switch secures via 2 M3×8 self-tapping screws—one technician can complete replacement in 15 minutes. The assembly supports UDS diagnostic protocol, allowing technicians to check communication status, button functionality, and signal strength via Dongfeng’s dedicated diagnostic tool. It transmits fault codes (e.g., communication failure, button stuck) to the IFMS, enabling proactive maintenance before complete failure. With a service life of ≥180,000km and a 1-year warranty, it minimizes downtime and reduces maintenance costs, ensuring continuous communication support for fleet operations