Honeywell 621-9938 Serial I/O Module
| Release time | Apr 28, 2026 |
|---|---|
| Brand | Honeywell DCS |
| Product Numbe | 621-9938 |
| Country Of Origin | USA |
| Dimensions | 38 x 157 x 125 mm |
| Weight | 0.699 kg |
| Condition | New & In Stock |
| Payment Methods | T/T, PayPal, Western Union |
| Lead Time | 1-3 Working Days |
| Warranty | One Year |
| Courier partners | DHL, UPS, TNT, FedEx and EMS. |
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Overview
The Honeywell 621-9938 is a serial I/O module designed for industrial automation systems. It enables reliable serial communication between controllers and field devices, expanding system connectivity and supporting efficient data exchange.
General Information
Part Number: 621-9938
Manufacturer: Honeywell
Brand / Country of Origin: Honeywell / USA
Series: 600 Series
Type: Serial I/O Module / Communication Interface
Mounting: Panel or rack installation within control cabinets
Technology: Serial communication interface, integrated diagnostics, and status monitoring
Power Specifications
Supply Voltage: 24 V DC
Power Consumption: ≤ 15 W
Input: Powered via system backplane
Protection: Overvoltage and reverse-polarity protection
Indicators: LED indicators for power, communication status, and fault
Communication & Interface
Interface Ports: Standard industrial serial bus connection
Network Role: Expands serial communication for controllers and field devices
Diagnostics: Monitoring of serial lines, fault detection, and status reporting
Operator Interface: LED indicators for visual status
Reset Features: Supports hardware and software reset
Environmental
Operating Temperature: 0 to +60 °C
Humidity: Up to 95% RH, non-condensing
Protection Rating: IP20 for standard industrial cabinet installation
Dimensions & Weight
Dimensions (L × W × H): 38 × 157 × 125 mm
Weight: 0.699 kg
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QDoes this product come with a warranty?
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Warranty Conditions
At Qunlebu Co., Ltd., we are committed to ensuring the quality of our products. Our one-year warranty provides coverage for any defects in material or workmanship, excluding damages caused by deliberate misuse.
🛡️Coverage Details:
This warranty encompasses all instances of product malfunction or failure due to inherent manufacturing flaws, with the exception of intentional damage.
📝Claim Process:
To avail of warranty services, please notify us of any quality-related issues within the warranty period. We may conduct online troubleshooting and examination as needed.
🚚Shipping Assistance:
We understand the importance of prompt service. Therefore, we cover return shipping costs for warranty-related returns within the first month of supply. Within three months of supply, we cover one-way shipping costs for warranty-related returns. After three months, the customer is responsible for shipping costs both ways.
🚫Exclusions:
Unauthorized modifications, repairs, or misuse of the product.
Normal wear and tear.
Negligence.
Extreme environmental conditions beyond product specifications.