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Honeywell 621-9940C Serial I/O Module Board Factory Sealed

Honeywell 621-9940C Serial I/O Module Board Factory Sealed

  • Manufacturer: Honeywell

  • Product No.: 621-9940C

  • Condition:in Stock

  • Product Type: Serial I/O Module Board

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 1000g

  • Shipping port: Shanghai/Yiwu/Shenzhen

  • Warranty: 12 months

Brand: Honeywell

Condition: 100% New Original

Payment Terms: T/T

Minimum Order Quantity: 1pc

The Honeywell 621-9940C is a 12-port serial I/O module board that is used to connect Honeywell programmable logic controllers (PLCs) to serial devices. It is a versatile and powerful board that can be used in a wide variety of applications.

Technical Specifications

  • Number of ports: 12
  • Port type: RS-232
  • Baud rate: Up to 115.2 kbps
  • Data bits: 7 or 8
  • Stop bits: 1 or 2
  • Parity: None, odd, or even
  • Flow control: None, hardware, or software
  • Dimensions: 3.9 in x 2.2 in x 0.5 in (100 mm x 56 mm x 13 mm)
  • Weight: 0.2 lbs (0.1 kg)


  • Industrial automation
  • Process control
  • Data acquisition
  • Building automation
  • Security systems

Contact Us


Cellphone: +86-18858995481 (WhatsApp/Wechat/Skype)


About Precise Module Ltd.

Our team specializes in sourcing discontinued and scarce automation components, and regardless of the year or scarcity of the part, we will find and deliver the spare parts you need so that your facility can be back up and running quickly. Our warehouses stock a wide range of automation and control components, and if you don't have what you need in stock, our team will search the globe to find the parts you need at the best price.


Q: How about the warranty?

A: All goods have 1 year warranty.

Q: What about the delivery time?

A: Normally in 1-3days.

Q: Other suppliers have a better price than yours?

A: To create the greatest benefit for clients is our belief, if you have a better price, please let we know. We will try the best to meet your price and support you.

Q: What about the shipment?

A: We can arrange shipment by DHL, FedEx, UPS,TNT, EMS with competitive price, of course, customers can also use their own freight forwarders.

Q: How about the terms of payment?

A: Generally through T/T, Paypal and Western Union also accept.

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