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Sales & Business Questions

  • How do i buys products from Rancent?

    At Rancent we sell our products and services to distributors, integrators, and OEM partners. We aim to stay behind and creat the best value for our partners in terms of quality, price and performance. Rancent is already a supplier to some local distributors and we are always glad to work closely with you in providing high-quality connectivity and CCTV solutions. Contact us via sales@rancent.com or marketing@rancent.com for more information or any inquires.

  • From where do Rancent products ship?

    All Rancent products ship from our warehouse and manufacturing facilities located in Tianjin, China.  

  • What is Rancent’s Warranty Policy?

    Rancent warrants to the customer that our products will be free of defects in design, materials and workmanship under normal use for a period of three years from the date of delivery. Please follow this link to our Warranty Information page.

  • How long has Rancent been in business?

    Rancent has been in business over 15 year since our establishment in 2003.

  • How do I become a distributor of your products?

    If you are interested in becoming a distributor, please follow this link to Become a Distributor to complete the Distribution Partner request form or directly send us a email to info@rancent.com for further negotiation.

  • How can I customize a product for specific application?

    Rancent has a R&D team of innovative and highly skilled engineers dedicated to the continual improvement of existing products and the development of customized products responding to customer’s needs. Contact us via info@rancent.com for further detailed discussion if you are in need of a tailored solution.

  • How can I request literature?

    Our printed sales literature can be shipped within a few days of your request. If you need it faster, every piece is available as a PDF that can be sent to you via email. Send your request to marketing@rancent.com.

  • How can I place an order?

    Please email your offical orders with detailed product and shipping information to sales@rancent.com.

  • What is the delivery time?

    Normally the order for standard products will be processed 4-6 business days to be ready for delivery.  We use UPS, DHL or TNT to facilitate the delivery of small quantity orders to overseas customers. The delivery time will be 3-5 business days depending on the destination after the order leaves our facilities. For larger quantity orders, we work with the freight forwarder authorized by us or customer for the delivery of shipment. 

Fiber Optics Questions

  • Why fiber optics?

    • Immunity to EMI/RFI/cross talk/ground loops and lightning damage

    • High bandwidth to transmit video, data, audio, contact, Ethernet simultaneously

    • Low attenuation (data loss)  and long distance signal transmission up to 120km

    • No sparks generated if cut – ideal for hazardous areas where a fire may occur

    • Corrosion and radiation resistant and chemically non-reactive

    • Secure communication – no risk of information leaking 

    • Low installation cost and easy future expandability

  • What’s the difference between singlemode and multimode?

    Multimode fiber has a relatively large light carrying core, usually 62.5 microns or larger in diameter. It is usually used for short distance transmissions with LED based fiber optic equipment. Single-mode fiber has a small light carrying core of 8 to 10 microns in diameter. It is normally used for long distance transmissions with laser diode based fiber optic transmission equipment. Here are the main differences:


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  • What’s the difference between OM1, OM2, OM3 and OM4 fiber?

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    *Rancent Ethernet/Video over Fiber Multimode products are compatible with OM1, OM2, OM3 & OM4 multimode fiber.

  • Do i need singlemode or multimode fiber optics?

    This depends on the application. Multimode fiber will normally allow transmission distances of up to about 3 km and will allow the use of relatively inexpensive fiber optic transmitters and receivers. There will be bandwidth limitations of a few hundred MHz per Km of length. For CCTV this will be fine but for high speed data transmission it may not be.


    Singlemode fiber on the other hand will be useful for long distance transmission from 20 km to 120 km but will require the use of singlemode transmitters (which normally use solid-state laser diodes). The stricter requirements of the small core size of singlemode fiber and the higher cost of these optical emitters mean that single-mode equipment can be relatively more expensive. Also singlemode optics may be compatible with multimode fiber cable but multimode optics are not compatible with singlemode fiber cable.

  • What’s the maximum transmission distance over singlemode and multimode fiber?

    Multimode fiber optic transmitters and receivers allow transmission distances from 500 m to 5 km depending on different models while singlmode converters are designed to extend the distance over single core fiber up to 120 km (Other distance options of laser diode modules are 20/40/60/80/100 km). 

  • What are most common fiber connector types and what do they look like?

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  • How do i select the correct model for fiber optic products?

    Rancent product line has a variety of different fiber optic transmitter and receiver options available, allowing users to choose the correct product for each application in order to provide the required optical connectivity solution over fiber when fiber is chosen. The selection of the correct model needs to confirm several factors including fiber type (singlemode or multimode), channels over fiber (video/data/audio/contact closures/Ethernet), fiber connector, transmission distance, power supply voltage, plug types and standalone or rack mountable versions, etc. Send your inquiry to sales@rancent.com for further discussion and confirmation.   

Warranty & RMA

Warranty terms and conditions on Rancent products and RMA service

Tech Support

Monday to Friday, 8:30 AM - 5:30 PM

Tel: +86-22-58711565

Email: support@rancent.com

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