--- product_id: 186032049 title: "One Channel Delay Relay CH340 CH340G 5V USB Intelligent Control Switch Board Programmable USB to TTL Module for Arduino Computer" brand: "lufasa" price: "£17.05" currency: GBP in_stock: true category: "Diy" url: https://www.desertcart.co.uk/products/186032049-one-channel-delay-relay-ch340-ch340g-5v-usb-intelligent-control store_origin: GB region: United Kingdom --- # One Channel Delay Relay CH340 CH340G 5V USB Intelligent Control Switch Board Programmable USB to TTL Module for Arduino Computer **Brand:** lufasa **Price:** £17.05 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** One Channel Delay Relay CH340 CH340G 5V USB Intelligent Control Switch Board Programmable USB to TTL Module for Arduino Computer by lufasa - **How much does it cost?** £17.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/186032049-one-channel-delay-relay-ch340-ch340g-5v-usb-intelligent-control) ## Best For - lufasa enthusiasts ## Why This Product - Trusted lufasa brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Descriptions: This Product is an intelligent controller, using the USB interface, can be directly inserted in the computer or other devices. Module using high-performance micro-controller chip, with over-current protection and relay diode freewheeling protection, and a LED to indicate the working state of the relay, communication baud rate defaults to 9600. The module has a variety of control methods, according to different circumstances, set up different types of control. Normal control mode: send commands to directly control the closing off, you can set the timer switch, the time after the arrival time, the relay state reversal. Jog control mode: send closed command, closed for a short period of time (closing time in 0.5s or less) after the break Delay control mode: send instructions, a period of time (delay time in 1s or less) after the implementation. The control mode defaults to the normal control mode. It can change the control mode by command, and save the control mode after power failure. Get the device into the USB interface, the computer will identify the device, in the device management display If the display UNKNOW DEVICE, it is because there is no drive, you need to ch340 drive or ch341 driver, driver installation is complete, the new module will be inserted on it. After opening the serial assistant, serial assistant on the Internet there are many types, one Like serial port assistant can complete the function of sending commands, serial assistant to open later as shown, select the serial number you just used ch340 driver, which is COM X, set the baud rate of 115200, click to open the serial port. (Above the use of the serial assistant can not be hot-swappable, unplug the device without closing the serial port, serial assistant will be stuck) The next step is to send instructions, the command format ## Features - The quality of the goods is good. - European developed countries Estimated Delivery Time: 7-16 days by Special line. 10-25 days for other country.We provide Expedited Shipping service : 3-7 days.(excluding handling time).If the order amount above €200, we will auto use DHL Expedited Shipping service - We are a professional distributor of electronic products and modules. You can search keywords in our store. I believe you can find the product you need. - If the product is unsatisfactory, just send me a return request, and we will full refund the money. - We attached great importance to the cooperation with every customer.any question,please feel free to contact me.have a great day! - ›See more product details ## Images ![One Channel Delay Relay CH340 CH340G 5V USB Intelligent Control Switch Board Programmable USB to TTL Module for Arduino Computer - Image 1](https://images-na.ssl-images-amazon.com/images/I/41dhDR6qH3L.jpg) ![One Channel Delay Relay CH340 CH340G 5V USB Intelligent Control Switch Board Programmable USB to TTL Module for Arduino Computer - Image 2](https://images-na.ssl-images-amazon.com/images/I/41sTOgLbASL.jpg) ![One Channel Delay Relay CH340 CH340G 5V USB Intelligent Control Switch Board Programmable USB to TTL Module for Arduino Computer - Image 3](https://images-na.ssl-images-amazon.com/images/I/41dUZuP4%2BZL.jpg) ![One Channel Delay Relay CH340 CH340G 5V USB Intelligent Control Switch Board Programmable USB to TTL Module for Arduino Computer - Image 4](https://images-na.ssl-images-amazon.com/images/I/41%2Bsf6eRABL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/186032049-one-channel-delay-relay-ch340-ch340g-5v-usb-intelligent-control](https://www.desertcart.co.uk/products/186032049-one-channel-delay-relay-ch340-ch340g-5v-usb-intelligent-control) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-30*