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RS-232 to RS-485 Converter for Security CCTV DVR PTZ HD Camera Control


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RS-232 to RS-485 Converter for Security CCTV DVR PTZ HD Camera Control
Model : 2021382181


Here's a summary of this item ......


Make use of RS232 port to control RS485 device for applications liked CCTV, Access Control and so on. It's a passive design that don't want separate power source.

Specifications :

  • RS-232 is a DB9 female (hole-type) connector with RS-485 is a DB9 male (needle-type) connector, with connection board.
  • Data Transfer Rate: 300-115200bps
  • Operating Distance: 1200m for RS485, 5m for RS232
  • Power: None required, uses TD as power source
  • Environment: -10C to 85C, 5% to 95% RH
  • Interface: Compatible with EIA/TIA RS-232C standard and RS-485 standard.
  • Working mode: Asynchronous, half-duplex, differential transmission.
  • T-ransmission media: Twisted-pair or shielded twisted pair (STP).


  • RS 232 / RS 485 Converter x 1

Other Products Information for Reference:

  • Model: JS4T2
  • Shipping Weight: 0.20Kg
Relevant technical knowledge for sharing:

Updated and completed product information can be referred toproduct official website

On Feb-07-13 at 04:50:45 PST, seller added the following information:

Your interest to our products are highly appreciated. As we're in a long China New Year holiday, we are sorry but no choice this is our unique Chinese culture to share and enjoy life with family, particularly for those they have left their home and family for year(s). Therefore, our operation is severely affected. We will be unable to ship items within 10 Feb to 20 Feb, and efficient of logistics between 21 Feb and 24 Feb may not smooth enough. We expect everything will be resumed normally from 25 Feb. Please place your order freely and comfortably, we'll start to ship items from 21 Feb. May I also take this opportunity to send our most warmest Chinese blessing to you - wishes you a very productive year of 2013.
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On Jun-05-13 at 01:57:38 PDT, seller added the following information:

* * SHIPPING NEWS: Security Warehouse has recently partnership with third party shipping agent to provide DHL shipping service at discount rate. From now on, we could offer DHL shipping to certain kind of order without extra cost to our buyers - though this is not guaranteed, we will try to provide. Anyway, the default shipping method provided by Security Warehouse is still registered air mail. You are welcome contact us before order for specific shipping arrangement. * *

On Jun-11-13 at 03:23:34 PDT, seller added the following information:

* * VACATION ARRANGEMENT - We are having a national holiday for celebrating a chinese festival called Boat Festival. Between 10 June and 12 June 2013, due to some outage of public services, our delivery of orders may have short period of delay. Everything will be resumed to normal from 13 June. We apologize for any inconvenience caused. * *

On Jun-14-13 at 01:01:03 PDT, seller added the following information:

* * CERTIFICATION - Security-Warehouse has acquired the best industrial recognized certification of PSP (Physical Security Professional) issued by the biggest security society in the world ASIS (American Society of Industrial Security). We hope our expertise in this area could help our clients for even the most complicated projects. * *

On Jun-17-13 at 03:32:51 PDT, seller added the following information:

* * SHIPPING UPDATE - Now we start to offer one more choice of shipping that is SHIP BY SEA. This is particularly suitable for big order of heavy items for wholesaler. Of course, the time to delivery is longer but the shipping cost will be much lower than regular air mail and express. All welcome to contact us for rate. We have partner in this shipping service. * *

On Jun-21-13 at 09:06:04 PDT, seller added the following information:

* * COMPANY NEWS - SECURITY-WAREHOUSE now have expanded our CORE manufacturing partners to 32. Each of our manufacturing partners are in a specific product line of security equipment. We believe our network is a very reliable source of high quality security equipment to our clients as long term development of business. * *

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