--- product_id: 81856797 title: "NOYITO TTL to RS232 Module - Mutual Conversion for SP232 & RS232 Serial Ports" brand: "noyito" price: "$U776" currency: UYU in_stock: true reviews_count: 8 category: "Noyito" url: https://www.desertcart.uy/products/81856797-noyito-ttl-to-rs232-module-mutual-conversion-for-sp232-rs232 store_origin: UY region: Uruguay --- # 3-5.5V wide power input Clear pin labels + schematic on back Compact 51x16mm blue PCB NOYITO TTL to RS232 Module - Mutual Conversion for SP232 & RS232 Serial Ports **Brand:** noyito **Price:** $U776 **Availability:** ✅ In Stock ## Summary > 🔗 Unlock flawless serial communication — don’t get left behind! ## Quick Answers - **What is this?** NOYITO TTL to RS232 Module - Mutual Conversion for SP232 & RS232 Serial Ports by noyito - **How much does it cost?** $U776 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/81856797-noyito-ttl-to-rs232-module-mutual-conversion-for-sp232-rs232) ## Best For - noyito enthusiasts ## Why This Product - Trusted noyito brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Clarity:** Silkscreen pin markings and onboard schematic eliminate guesswork—engineer-friendly design. - • **Trusted Reliability:** Backed by a 1-year manufacturer warranty and praised for stable, consistent performance. - • **Versatile Compatibility:** Ideal for Arduino, Raspberry Pi, BeagleBone, and professional serial expansions. - • **Compact Power Efficiency:** Operates reliably on 3-5.5V supply with low power draw, perfect for embedded projects. - • **Seamless MCU to RS232 Bridge:** Effortlessly connect TTL serial ports with RS232 devices for flawless data exchange. ## Overview The NOYITO TTL to RS232 Module is a compact, blue PCB adapter designed to convert MCU TTL serial signals to RS232 levels, supporting 3-5.5V power input. Featuring clear pin labeling and a schematic on the back, it simplifies integration with devices like Arduino and Raspberry Pi. Powered by the reliable SP3232 chip, it ensures stable serial communication with a 1-year warranty, making it a must-have for professionals expanding serial connectivity. ## Description Uses： The TTL serial port of communicates with the RS232 level device. Serial expansion of the device. RS232 port communication with computer PC. Can be used for electronic compass, car detection, hard disk maintenance etc .(Need the user staff with a certain degree of professional knowledge and operational capabilities) Description: Supports 3-5.5V power supply. Use high-quality chips. In order to facilitate the use of the product, each pin is marked, and a schematic diagram of the product is printed on the back of the product. Instructions for use: (Taking the access MCU as an example, how to connect each row of pins) TTL (UART) side: VCC: DC 3V-5.5V GND: Connect to GND TXD: Connect to MCU.RX (Signal Flow: MCU.RX ← SP3232 ← RS232.TX ) RXD: Connect to MCU.TX (Signal Flow: MCU.TX → SP3232 → RS232.RX) CTS, RTS is not used by default. RS232 side: RXD: Connect RS232.TX (Signal Flow: RS232.TX →SP3232 → MCU.RX) TXD: Connect to RS232.RX (Signal Flow: RS232.RX ←SP3232 ← MCU.TX) GND: Connect to RS232.GND CTS, RTS is not used by default. Package Included: 1 pcs TTL to RS232 Module Review: Great boards, easy to work with, reliable. - These are my go-to parts for TTL-RS232 conversion: they work really well, and they aren't attached to a DE-9 connector I usually don't need. They've been very reliable and easy to work with on Arduino, Pi and BeagleBone, and the price is certainly right. The silkscreen legends are clear and super helpful: no need to search the web for the pinouts, though the chip's data sheet is detailed and useful and can be worth a scan. Somebody asked if it does full +/- 12v on the RS232 lines, and it definitely does not: the chip isn't designed to have a 24v swing in the output circuits. The boards I have are based on the Sipex SP3232E chip, whose data sheet says max output swing +/- 13v, which is what i see. This scope trace shows the TX output line of a 19200bps signal with an amplitude of +5.9v to -5.7v, which is pretty much par for the course with a 5v supply. Using a 3.3v supply drops this only slightly (+5.8 to -5.6v on my boards), and all of this is plenty good for RS232. The ripple in the highs and lows are likely correlated with charge pump activity, and this isn't any problem for RS232 either. Review: The real deal - Works great! Used in a project to connect a pi to a renogy wanderer charge controller. LEDs are handy for troubleshooting. Little pricey but does the job. Be aware there are counterfeit RS232 chips out there. Had purchased a different module, it ran hot and consumed 200 mA doing nothing. Turned out the chip had missing internal pull up resistors (and who knows what else). ## Features - Uses: MCU's TTL serial port communicates with RS232 level devices. Serial expansion of the device. RS232 port communication with Computer PC. - Supports 3-5.5V power supply. - Size : 51 x 16 mm (LW) , Color:Blue. - In order to facilitate the use of the product, each pin is marked, and a schematic diagram of the product is printed on the back of the product. - Manufacturer's One-year After-sale Warranty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07BJJ3TZR | | Best Sellers Rank | #475 in Serial Adapters | | Brand | NOYITO | | Color | Blue | | Compatible Devices | TTL Serial Port Communicates with RS232 Level Devices | | Connector Type | Serial Adapter | | Customer Reviews | 4.2 4.2 out of 5 stars (38) | | Finish | Blue | | Input Voltage | 5 Volts (DC) | | Item Dimensions | 2.01 x 0.63 x 0.12 inches | | Item Type Name | TTL to RS232 Module | | Item Weight | 5 Grams | | Manufacturer | NOYITO | | Model Number | NO-TTLRS232-5V | | Number of Items | 1 | | Number of Ports | 1 | | Package Quantity | 1 | | Power Plug Type | Type A - 2 pin (North American) | | UPC | 667797748388 | | Unit Count | 1.0 Count | | Warranty Description | Manufacturer's One-year After-sale Warranty | | Warranty Type | manufacturer,warranty | ## Product Details - **Brand:** NOYITO - **Color:** Blue - **Compatible Devices:** TTL Serial Port Communicates with RS232 Level Devices - **Connector Type:** Serial Adapter - **Item dimensions L x W x H:** 2.01 x 0.63 x 0.12 inches ## Images ![NOYITO TTL to RS232 Module - Mutual Conversion for SP232 & RS232 Serial Ports - Image 1](https://m.media-amazon.com/images/I/71hzGoinrTL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great boards, easy to work with, reliable. *by S***L on March 21, 2021* These are my go-to parts for TTL-RS232 conversion: they work really well, and they aren't attached to a DE-9 connector I usually don't need. They've been very reliable and easy to work with on Arduino, Pi and BeagleBone, and the price is certainly right. The silkscreen legends are clear and super helpful: no need to search the web for the pinouts, though the chip's data sheet is detailed and useful and can be worth a scan. Somebody asked if it does full +/- 12v on the RS232 lines, and it definitely does not: the chip isn't designed to have a 24v swing in the output circuits. The boards I have are based on the Sipex SP3232E chip, whose data sheet says max output swing +/- 13v, which is what i see. This scope trace shows the TX output line of a 19200bps signal with an amplitude of +5.9v to -5.7v, which is pretty much par for the course with a 5v supply. Using a 3.3v supply drops this only slightly (+5.8 to -5.6v on my boards), and all of this is plenty good for RS232. The ripple in the highs and lows are likely correlated with charge pump activity, and this isn't any problem for RS232 either. ### ⭐⭐⭐⭐ The real deal *by H***S on December 28, 2020* Works great! Used in a project to connect a pi to a renogy wanderer charge controller. LEDs are handy for troubleshooting. Little pricey but does the job. Be aware there are counterfeit RS232 chips out there. Had purchased a different module, it ran hot and consumed 200 mA doing nothing. Turned out the chip had missing internal pull up resistors (and who knows what else). ### ⭐⭐⭐⭐⭐ Has tx and rx leds *by D***D on August 12, 2021* Used this to read data from my inverters RS232 port, using wemos d1 mini and publish the data to MQTT broker. I bought several others while writing the code for the wemos and trying to get data from inverter. This one has got power, transfer and receive lights which comes handy troubleshooting the code. Finally got a response from the inverter and this converter works just fine. I visually see when the command is sent to inverter and the response received back from it. I also like that this has got nice leads that you can solder the wires, as well as holes to integrate it on a PCB if needed. Overall a great product. ## Frequently Bought Together - NOYITO TTL to RS232 Module TTL RS232 Mutual Conversion Module Serial Level Conversion to SP232 TTL Serial Port communicates with RS232 Level Device - HiLetgo 10pcs Mini RS232 to TTL MAX3232 to TTL Level Converter Board Serial Converter Board RS232 to TTL Serial - HiLetgo 5pcs RS232 to TTL Converter Module COM Serial Port Board MAX3232 MAX232CSE --- ## 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.uy/products/81856797-noyito-ttl-to-rs232-module-mutual-conversion-for-sp232-rs232](https://www.desertcart.uy/products/81856797-noyito-ttl-to-rs232-module-mutual-conversion-for-sp232-rs232) --- *Product available on Desertcart Uruguay* *Store origin: UY* *Last updated: 2026-04-24*