This page showcases the OTC DAIHEN L20400F / L20400F00 circuit board, a genuine spare part used in robot control systems. This board is critical for I/O and control functions. Please note: the board may be marked L20400F04, but the correct ordering part number is L20400F or L20400F00. Below you will find photos, specifications, and ordering information.




The L20400F / L20400F00 is a control circuit board used in OTC DAIHEN robotic systems. It handles I/O and other control functions. Although the board itself may be marked L20400F04, this is an internal reference – the correct OTC ordering part numbers are L20400F or L20400F00. Please use these numbers when placing an order to ensure you receive the correct genuine board.
Part Numbers: L20400F / L20400F00 (order using these)
Board Marking: L20400F04 (for reference only)
Description: I/O / control circuit board
Application: OTC DAIHEN robot control systems
Origin: Japan – genuine OTC DAIHEN production
Using authentic OTC DAIHEN L20400F ensures correct firmware, reliable operation, and exact form‑fit‑function. Non‑OEM boards may cause system errors or incompatibility. As an authorized OTC DAIHEN distributor, we supply only 100% original, factory‑sealed parts.
We offer a full range of OTC DAIHEN equipment, original spare parts, and consumables. Contact us for controllers, boards, cables, and more.
For pricing, stock availability, or technical inquiries regarding the OTC DAIHEN L20400F circuit board, please contact us.
Phone / WhatsApp: +86-180-9663-1656
Email: ahojotc@gmail.com (preferred for detailed inquiries)
You are also welcome to connect on WhatsApp for technical discussions and knowledge sharing about OTC DAIHEN welding machines and robotic systems.
* For fastest response, please email ahojotc@gmail.com directly. Thank you.
Company: COMPANY:Authorized Distributor of OTC Daihen
Contact person: Contact:Mr.Fang
Mobile phone: Phone:+86-18096631656
Email address: Email:15305667776@163.com
Address: Add:Room 11-704, K Xijia, No. 502, Wangjiang West Road, Hefei, Anhui, China