Gold Member Since 2015
Audited Supplier
Beijing Tengcontrol Technology Co., Ltd.

Protocol Converter, RS485 Repeater, 4-20mA Converter manufacturer / supplier in China, offering Industrial Communication Converter Tengcon EC7521 Isolation Repeater, Tengcon PLC (T-960), Stc-1 (8AI 8DI 8DO) Modbus RTU Remote I/O Module and so on.

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Supplier Homepage Product Industrial Communication(Converter) Industrial Communication Converter Tengcon EC7521 Isolation Repeater

Industrial Communication Converter Tengcon EC7521 Isolation Repeater

FOB Price: US $39 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $39/ Piece
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Production Capacity: 10000 PCS/Year
Transport Package: Cartons Packed, Inner Box, Outer Export Carton
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: EC7521
  • Transmission Medium: Cable
  • Lightning Protection: With Lightning Protection
  • Condition: New
  • Mount: Surface or DIN Rail
  • Key Words: Active Photoelectric Isolation Repeater
  • Size: 115mmx72mmx25mm
  • Origin: Beijing China
  • Type: Signal Repeater
  • Standard: Standard
  • Certification: ISO, CE
  • Model Number: Ec7521
  • Input Power Supply: DC9-36V
  • Warranty: 3 Years
  • Trademark: TENGCONTROL
Product Description
Industrial Communication Converter Tengcon EC7521 Isolation Repeater
EC7521 is Active photoelectric isolation Repeater of TengControl technology limited .
Compatible with the RS485 standard,it can electrical isolate the RS485 signals and amplify signals.
The built in optoelectronic isolator can be provided isolation voltage 1500 v.
The fast transient voltage suppressor (TVS) not only can  effectively restrain the Lightning and ESD,but also can effectively prevent the lightning strike and interference.Due to the RS - 485 support two line half duplex,That is to say, the RS - 485  which have only two line not only need to send data but also need to receive data.Handshake signals (such as RTS, the Request To Send) usually control the direction of the data,The circuit of EC7521 can automatically perceive the direction of data flow ,And automatically switch to be controlled,So It is easy to form a RS - 485 network without any hand signal.
ThisRS485 enable control is completely transparent,and does not need do any software modifications based on the previous works for RS - 485.
EC7521 Active photoelectric isolation Repeater can provide reliable connections for point-to-point and point to multipoint can be allowed to connect 32 RS485 interface equipments for 
Point to multipoint. Data communication rate from 0 to 500 KBPS,Yellow LED can indicates data flow from AO BO network to A1 B1 network.

Interface feature:

Port compatible with EIA / TIA RS-485 standard 

Electrical Interface:

RS-485 interface terminals, power interface terminals.

Transmission media:

Twisted pair or shielded wire

Working mode:

Asynchronous half-duplex or full-duplex asynchronous

Signal indication:

Two signal LED indicate COM and POWER .


Isolation voltage 1500VRMS, 2000VDC continuous

Transfer rate: 

115K BPS to 300M; 187.5K BPS to 1KM; 9600 BPS to 5KM 

Degree of protection:

±15 KV ESD protection, RS-485 interface each 600W lightning surge protection.

Transmission distance:

0-5 km  (500000-300BPS) .

Operating environment:

-25 ° C to 70 ° C, relative humidity: 5% to 95% 



Supply voltage:



Surface or DIN rail

Ingress Protection:


Our Service :

1.Any inquiries will be replied within 24 hours.
  2.OEM/ODM available.
  3. Three years Quality warranty.
  4.Cooperation with DHL, TNT, UPS,FEDEX.EMS.China Air Post.
  5.We accept TT Bank transfer ESCROW, West Union  Paypal etc
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