TTL to RS232 Serial Converter Module Interface Board


  • Model: TTL-232
  • 10000 Units in Stock

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TTL to Serial RS232 Converter Module Interface Board



The adapter fit for wireless serial port module in this shop.




  1. Insert wireless module
  2. Setting Switch  --->  ON
  3. Connect Computer Serial Port  &  9V Battery ( included )
  4. Power Supply Switch  ---> ON,   Setting Status indicator  ---> Green
  5. Use software setting module parameter


Under normal communication mode,  Setting Switch ---> OFF

  • Operating Temperature:  -20°C  to  +60°C
  • Dimensions:  54 mm (L)  x  45 mm (W)  x  36 mm (H)

RS232 Interface:

Pin Signal Direction Description
2 TxD Output Transmitted data
3 RxD Input Received data
4 Gnd N/A Signal ground
5 CTS Input Clear to send
6 RTS Output Request to send
7 Vcc Input Power supply (optional)





Packing Included

  • 1 x TTL to RS232 Interface Board ( Not include wireless module )
  • 1 x 9V GP Super Alkaline Battery




  • Please use eBay message Contact us to Resolve Any Issues before Leaving Feedback or Open Dispute.
  • We are in different time zones, reply your ebay message within 24 business hours.


  • Shipping time: usually  10 ~ 18  Business days, US, UK, DE, FR, CA, AU, NL, CH, SE, GR, BE ...... European Countries.
  • But  Italy, Spain, Russian, Israel, India, Indonesia, Philippines ...... need 14 ~ 25  Business days.
  • Due to Local postal service & Customs, some countries take a little longer.
  • We accepted International order. We ship to Worldwide.
  • Ship to eBay address, please confirm your web address on eBay.
  • Item will be shipped via Hong Kong Post or China Post, Use Registered Air Mail with tracking Number.
  • Tracking number and track web site in item Notes to buyer, please go to see.
  • Can not Combine postage. No sales tax and No handling fees.


    • We prefer payment via PayPal, Moneybookers are also accepted.
    • Payment must be made within 7 calendar days. Non-Paying bidders will be reported.
    • We reserve the right to cancel your order if the payment is not made within 7 calendar days of checkout.


    • Your satisfaction is our first priority. Defective product will be offered for a replacement or refund money.
    • It is buyer's responsibility to contact us within 30 calendar days of receiving a defective product. Otherwise, no replacement or refund will be made.
    • Buyer is responsible for shipping costs of delivery, item be returned in their original condition. When received, send you a replacement or refund within 24 business hours.

    Thank you for your bought, have a nice day!  :)

  • This product was added to our catalog on Friday 18 February, 2011.