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- SKU: 05754
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CH9121 Serial Port To Ethernet Converter Module - Industrial Grade
The CH9121 Serial Port to Ethernet Converter Module is a robust and reliable networking solution designed specifically for industrial applications. This compact yet powerful module seamlessly bridges the gap between serial communication devices and Ethernet networks, facilitating efficient data transfer and connectivity in industrial environments.
Specifications
- Size : 43mm*23mm*14.5mm
- Working voltage : DC3.3V/5V
- Operating current : 200mA@5V
- Working temperature : -40~85℃
- Storage temperature : -55~125℃
Ethernet Parameters
- Number of ports: 1
- Interface standard: RJ45 interface
- LAN Ethernet: 10 / 100Mbps
- Data cache: 6K bytes
- Protection: 2KV electromagnetic isolation
- Network protocols: IP, ARP, TCP, UDP, ICMP, IGMP, DCHP and so on
Serial Port Parameters
- Number of ports: 1
- Interface standard: TTL serial port, 2.54MM pin, 3.3V or 5V level
- Baud rate: 300 ~ 921600bps
- Data bits: 5,6,7,8,9
- Stop bit: 1,2 bit
- Parity: no parity, odd parity, even parity
- Flow Control: None
- Cache: 2K bytes
Pin Description
- RESET: Factory reset pin, the module power-on detection, active low
- DIR: RS485 receive, send switch control pin
- TCPCS: TCP client mode, the port connection status indicator pin, the connection is successful output low
- RUN: module running status indication pin, input 2Hz square wave
- GND: Power Ground Pin
- 3.3V: 3.3V DC power input pin, greater than 200mA, and 5V DC power supply alternatively
- GND: Power Ground Pin
- 5V: 5V DC power input pin, greater than 200mA, and 3.3V DC power supply can choose one of two
- RSTI: reset pin, the internal pull-up, low-effective, can not be vacant
- CFG: serial port configuration module enable pin, built-in pull-up, low-effective, do not have to be vacant
- RXD: Serial data receive pin, serial port TTL level, compatible with 3.3V and 5V
- TXD: serial data transmission pin, serial TTL level, compatible with 3.3V and 5V
- GND: Power Ground Pin
- 3.3V: 3.3V DC power input pin, greater than 200mA, and 5V DC power supply alternatively
- GND: Power Ground Pin
- 5V: 5V DC power input pin, greater than 200mA, with the optional 3.3V DC power supply can be
Warranty Terms :
Branded products (Waveshare/ Raspberry Pi/ Radxa/ DWIN etc) are as per brand warranty terms. Generic products are eligible for replacement within 7 days of delivery based on following conditions.
Products are eligible for a replacement if there is physical damage during transit or a clear manufacturing defect. Any claim for damage/ wrong items/ replacement must be made within 48 hours of successful delivery of the product. Requests for refund of amount or exchange of product(s) will be reviewed on a case by case basis and HUBTRONICS carries final rights to take a final decision on refund, store credit or exchange.
What to take care of ?
Most of our products are technical in nature and require trained personnel to handle them. Any kind of mishandling can result in damage or malfunctioning of the product, it is not possible for us to provide a replacement or refund if the product is damaged due to technical or physical mishandling.
Who pays the return shipping cost?
Free of cost return pickup from delivery address is eligible for products categorized as manufacturing defect/ Damage in transit/ Wrong items delivered. We do not support return pickup for any B2B order or offline orders not placed on website. Buyer need to arrange return shipping for B2B orders.
What voids warranty?
Please note that replacement/ return or refund is not possible if the product is not compatible with your system/application. Please check all the technical details/ dimensions etc. before ordering and contact us for any kind of clarifications.
If product is soldered/ programmed at any point or physically altered in any way, it is not eligible for return/ replacement. If the item requires soldering for testing, please ensure that you use suitable clips or jig to test it without soldering. Any kind of soldering job makes the product ineligible for return or replacement.
Following items are not eligible for return under any circumstances
- Device Programmers / Dongles
- Soldering Consumables (Wire, Flux etc)




