What this page is
This page is for OEM teams sourcing a CAN bus switch panel manufacturer in China. It covers the multiplexed switch panels, keypads and rotary controllers we build and how they are specified, validated and produced. Every panel is quoted against your key layout and message matrix rather than shipped as a fixed catalogue part — send a panel sketch and a switch list and we typically reply within one business day.
The detail below is the qualification pack we share with engineering teams specifying a cab dashboard, an upfit control panel or an off-road console. For the engineering background — how multiplexed switching works and how to write the specification — see the CAN bus switch panel buyer guide.
Who Youlai is
Changsha Youlai Electronic Technology Co., Ltd. is an IATF 16949 certified OEM electronics manufacturer based in Changsha, Hunan, China. We supply vehicle electronics — switch panels and keypads, body control, power distribution, displays and sensors — to commercial-vehicle and construction-machinery OEMs including SANY, XCMG, ZOOMLION, SINOTRUK, YUTONG and BYD. The full named list is on the About page.
The quality system is certified to IATF 16949. Environmental and OH&S system certificates (ISO 14001 / ISO 45001) are shared as current PDFs during qualification — see the OEM sourcing guide for what to verify.
What we make in CAN switch panels
The EDK family covers the driver-facing switching of a commercial vehicle, from a full dashboard rocker grid to a compact rotary HMI. Every model below is a published platform we build to your OEM specification.
| Model | Format | Supply | Bus | Sealing |
|---|---|---|---|---|
| EDK‑907 | Eight-position rocker / key grid | 18–32 VDC | CAN + 24 V / 500 mA hard-wire backup | IP53 |
| EDK‑2403 | Twin rotary knobs with push and 4-way select | 18–32 VDC | CAN | IP65 |
| EDK‑2507 | Four buttons, four side-pushes, rotary encoder | 9–32 VDC | CAN 2.0 | IP66 |
| EDK‑2213 | EPB paddle + Auto Hold button | 9–32 VDC | CAN + 500 mA hardwire output | Per programme |
| EDK‑908B | Door and window switch | 9–32 VDC | CAN + 24 V / 500 mA hardwire | Per programme |
| EDK‑908 | Door and window switch | 18–32 VDC | LIN | Per programme |
| EDK‑914 | Power-window switch, single or dual button | 18–32 VDC | LIN | IP53 |
LIN is chosen per panel where local wiring cost matters more than bandwidth, usually on door, mirror and simple keypad clusters.
The full Switches & Sensors catalogue, including the model matrix, is on the Switches and Sensors overview page; buyers consolidating a whole program can also source body control, power distribution, displays and sensors from the same supplier across the four product families.
Lines and test equipment
The Changsha factory runs three SMT lines (solder-paste print, SPI, JUKI placement, multi-zone reflow and AOI), one THT auto-flow line with wave soldering, and four assembly lines. Every assembly line ends in a functional test station. In-circuit testing is done on the ICT station. Annual capacity across the factory is 1.5 million sets.
These rigs belong to the Changsha lab, which validates models across the four product families.
| In-house rig | What it tests |
|---|---|
| Water-spray chamber | IPX water ingress |
| Dust chamber | IP5X / IP6X dust ingress |
| Salt-spray chamber | Accelerated corrosion |
| Temperature and humidity chamber | Programmable temperature and humidity profiling |
| Climate cycling chamber | Long-form humidity and temperature cycling |
| Thermal-shock chamber | Hot–cold step change |
| Aging chamber | Sustained burn-in at elevated temperature |
| Vibration and shock | Multi-axis vibration table; drop and bump |
| ESD generator | ESD immunity per IEC 61000-4-2 |
| ISO 7637 simulator | Supply-line transient immunity |
| Surge generator | Lightning surge immunity |
| Hipot tester | Dielectric withstand and insulation resistance |
| HIL simulation rig | Hardware-in-the-loop vehicle-network simulation |
In-house EMC work is pre-compliance. Formal EMC certification, when a programme requires it, is at accredited third-party laboratories. The quality page has photos of the lines and of the rigs it shows. Dust ingress, vibration and mechanical shock are described on the environmental and EMC page.
How a programme starts
- Briefing. These help if you already have them: target vehicle / machine, expected annual volume, working voltage (12 V / 24 V), the function and key list, switch type (rocker, momentary, latching, rotary), communication protocol (CAN 2.0 / CAN-FD / J1939 or LIN) and baud rate, backlight scheme, IP rating, temperature range, mounting cut-out and connector preference.
- Selection or custom. We propose the closest standard EDK platform. If your program needs a different key count, legend, sealing class, bus matrix or connector, we quote a custom variant on the same platform rather than starting from zero. Where the requirement does not map onto any existing platform, we scope it as a new design instead of forcing a fit.
- Message matrix ownership. We agree early on who owns the CAN identifier and bit map — the OEM supplying the key map, or a matrix adapted from an existing design. This decision drives lead time more than any hardware line item.
- Sample & validation. Engineering samples for standard variants, with validation supported by our in-house environmental lab and EMC pre-compliance — key-force calibration, actuation-life cycling, temperature and vibration, and a full CAN packet round-trip against your body-control simulator.
- Mass production. On the lines above, with in-process inspection, an end-of-line CAN-message test and traceable batch records. The drawing package, BOM and quality-system documentation are released at the milestones agreed with you. Market compliance paths (UNECE / e-Mark where applicable, SASO/SABER, FCC authorisation, DOT/FMVSS where applicable) available upon project requirement.
Why programmes pick this supplier
- Engineering-led, not catalogue-only. Every EDK panel is a project we own end-to-end, from PCB and key-mechanism design through bus integration. Custom legends, layouts and message matrices are routine, not an exception.
- Bus integration. Baud rate and message IDs are set to your body network. See how a panel reports key states and how the body module acts on them in the CAN bus switch panel guide.
- Mechanical durability. Rated actuation life is specified per key — 30,000 cycles on the EDK-907 rocker grid, 100,000 on the EDK-2507 rotary controller — and tested, because the part the driver touches thousands of times is the one that has to last a fleet duty cycle.
- Sealing range. From IP53 cab-interior panels to IP66 controllers for exposed or off-road positions; the design rationale behind IP65 / IP67 enclosures is documented, not assumed.
- Full product-family coverage. Buyers consolidating the electronics side of a program get switching, body control, power distribution and displays from one supplier — see the four product families.
- Direct contact. Sales mobile +86 134 6767 4786, also on WhatsApp.
Get a quote moving
Email sales@yltronics.com or message us on WhatsApp. A panel sketch, a function and key list, and the bus matrix help if you already have them. Typical reply within one business day. NDA on request.