Honeywell 621-9928R Serial Link Selector: Advanced Communication Module

The Honeywell 621-9928R enables reliable serial communication. This selector module connects multiple devices. Perfect for industrial automation networks.

Communication Specifications

• Brand & Model:Honeywell 621-9928R
• Communication Ports: 2 x RS-232 serial ports
• Additional Ports: 2 x RS-485 serial ports
• Data Speed: Up to 256 kbps baud rate
• Signal Isolation: 2000 VDC protection
• Protocol Support: Multiple industrial protocols
• Data Integrity: Error checking included
• Signal Quality: Noise immune design

Electrical Specifications

• Power Supply: 24 VDC ±10% operation
• Power Consumption: 7W maximum usage
• Wiring: Terminal block connections
• Protection: Reverse polarity protected
• Surge Protection: Built-in transient protection
• Grounding: Isolated ground reference

Physical Specifications

• Compact Design: 3.0 x 26.7 x 16.5 cm
• Lightweight: Only 0.5 kg total weight
• Mounting: DIN rail compatible
• Enclosure: Industrial metal housing
• Connectors: Removable terminal blocks
• LED Indicators: Port status lights

Environmental Specifications

• Operating Temperature: -25°C to +75°C
• Storage Temperature: -40°C to +100°C
• Humidity Range: 0-90% non-condensing
• Altitude Rating: Up to 2000 meters
• Vibration Resistance: 2G operational
• Shock Resistance: 15G withstand

Shipping & Support

• Worldwide shipping via FedEx, UPS, DHL
• Fast order processing
• Secure packaging protection
• 12-month warranty
• Technical support available
• Online resources provided

Frequently Asked Questions

• What protocols does it support? Modbus RTU and ASCII
• Can it convert protocols? No, it is a selector module
• Is configuration software free? Yes, free download available
• What cable types are needed? Standard serial cables
• Does it require external power? Yes, 24VDC power supply