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Home Product ASR-2321 - RS-232/485 Protocol Converter, Modbus RTU Interface, DIN-Rail Terminal Module
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ASR-2321 - RS-232/485 Protocol Converter, Modbus RTU Interface, DIN-Rail Terminal Module

ASR-2321 RS232 Adapter
ASR-2321 Serial Module
ASR-2321 Relay Controller
ASR-2321
ASR-2321 RS232 Adapter and Serial Module for reliable device connectivity via RS232 interfaces, integrated Relay Controller enabling automated control of electrical circuits in industrial/commercial applications.
Categories:Safety & Security
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Product Description

The ASR-2321 RS232 Adapter is a compact Serial Module and Relay Controller designed for industrial automation and control systems. It features 8 digital inputs, 4 relay outputs, and direct support for up to 3 expansion modules, enabling flexible configuration. Equipped with an RS232 interface, it operates at 12-24V DC within a -20°C to 70°C temperature range, ensuring reliability in harsh environments. The ASR-2321 Serial Module supports standard communication protocols, while the ASR-2321 Relay Controller provides robust switching for machinery control. Its compact design (120mm x 80mm x 25mm) lacks an integrated screen or battery, focusing instead on seamless PLC integration. Key advantages include high durability and plug-and-play simplicity, though it requires external isolation for sensitive applications. The module excels in factory automation, process control, and equipment monitoring with precise signal handling up to 10 meters for reliable data transmission.
Parameter Specification
Model ASR-2321 RS232 Adapter, ASR-2321 Serial Module, ASR-2321 Relay Controller
Interface RS232 standard serial port
Protocol Support Modbus RTU, ASCII, RAW
Baud Rate Range 300 bps - 115200 bps
Data Bits 5, 6, 7, 8
Parity Control None, Even, Odd, Mark, Space
Relay Channels 4 SPDT relays
Contact Rating 250VAC/5A, 30VDC/5A
Optical Isolation 2500Vrms (RS232 to relays)
Power Supply 9-30VDC, 500mA
Operating Temperature -20°C to +70°C
question:What is the warranty?
answer:The warranty covers manufacturing defects for 1 year from the delivery date, excluding misuse or unauthorized repairs.
question:Why is there a processing fee?
answer:The processing fee covers order handling, documentation, and transaction costs to ensure smooth operations.
question:Can you provide upgraded or alternative models?
answer:Yes, we offer upgraded or alternative models based on availability. Contact us for specific options and pricing.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:What is the warranty?
answer:The warranty covers manufacturing defects for 1 year from the delivery date, excluding misuse or unauthorized repairs.
question:Why is there a processing fee?
answer:The processing fee covers order handling, documentation, and transaction costs to ensure smooth operations.
question:Can you provide upgraded or alternative models?
answer:Yes, we offer upgraded or alternative models based on availability. Contact us for specific options and pricing.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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