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- Yokogawa
- ALR121-SE1
- Serial Communication Module
- Japan
- 126.7 × 32.8 × 130 mm
- 0.3 kg
- Xiamen, China
- New & In Stock
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Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Yokogawa ALR121-SE1 Serial Communication Module
Product Introduction
The Yokogawa ALR121-SE1 is a high-reliability serial communication module designed to integrate seamlessly into complex industrial automation networks. As part of Yokogawa’s well-established FA-M3 Series, the ALR121-SE1 facilitates stable and efficient serial communication through standard interfaces like RS-232C and RS-485. It enables connectivity with a wide range of field devices such as meters, controllers, analyzers, and legacy systems, ensuring real-time data exchange in both central and distributed control architectures.
Its compact form factor, excellent noise immunity, and software-configurable features make the ALR121-SE1 an optimal solution for modernizing factory floors without overhauling existing infrastructure. Whether used in manufacturing, utilities, or infrastructure automation, this module delivers Yokogawa’s trademark precision and performance.
Product Specifications
| Parameter | Value |
|---|---|
| Model | ALR121-SE1 |
| Function | Serial Communication Module |
| Series | FA-M3 Series |
| Brand | Yokogawa |
| Supported Protocols | RS-232C / RS-485 |
| Number of Channels | 1 |
| Baud Rate | Up to 115.2 kbps |
| Data Format | 7/8-bit, Odd/Even/None Parity |
| Stop Bits | 1 or 2 |
| Communication Mode | Full duplex / Half duplex |
| Electrical Isolation | Optical isolation between ports |
| Configuration | Via programming tool |
| Operating Voltage | 24 VDC (from base unit) |
| Mounting Type | DIN-rail compatible |
| Protection Rating | IP20 (for control cabinet use) |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -20°C to 70°C |
| Dimensions (W × H × D) | 126.7 × 32.8 × 130 mm |
| Weight | 0.3 kg |
Applications
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Process Plants – Reliable communication with serial analyzers, flowmeters, and RTUs in chemical and petrochemical industries.
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Factory Automation – Ideal for legacy device integration in manufacturing control systems.
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Utilities and Infrastructure – Communication with energy meters, data loggers, and grid controllers.
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Transportation and Logistics – Data acquisition from serial-based sensors and control units.
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Water Treatment Plants – Remote monitoring and control of pumps and sensors via RS-485 networks.
Advantages
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Versatile Protocol Support: Enables seamless integration with RS-232C and RS-485 compatible equipment.
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Compact and Lightweight: Space-efficient design simplifies installation even in tight cabinets.
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High Noise Immunity: Optical isolation and robust electronics ensure stable performance in noisy environments.
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Software-Configurable: All parameters like baud rate, parity, and stop bits are configurable via a user-friendly tool.
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Long-Term Reliability: Designed with Yokogawa’s industrial-grade engineering, ensuring long service life.
Brand Overview
Yokogawa Electric Corporation is a global leader in industrial automation, process control, and instrumentation solutions. Founded in 1915, Yokogawa is known for its commitment to precision engineering, robust system design, and continuous innovation. The FA-M3 Series, to which the ALR121-SE1 belongs, is a modular and high-speed controller platform that offers scalable and flexible solutions for various industrial automation challenges. It is trusted globally for delivering unmatched speed, reliability, and ease of integration in automation systems.
Related Models (Same Series or Category)
| Model | Description | Protocol | Dimensions (mm) | Weight |
|---|---|---|---|---|
| ALR121-S53 | RS-232C/RS-485 Serial Comm Module | RS-232C / RS-485 | 126.7 × 32.8 × 130 | 0.3 kg |
| ALR121-S51 | RS-232C Interface Module | RS-232C | 126.7 × 32.8 × 130 | 0.3 kg |
| ALR121-S56 | Dual-Port RS-485 Communication Module | RS-485 x2 | 126.7 × 32.8 × 130 | 0.3 kg |
| ALR121-DP1 | PROFIBUS-DP Communication Module | PROFIBUS-DP | 126.7 × 32.8 × 130 | 0.3 kg |
| ALR121-SE2 | Enhanced Serial Interface Module | RS-232C / RS-485 | 126.7 × 32.8 × 130 | 0.3 kg |
Popular Models (Same Brand)
| Model | Description | Series | Dimensions (mm) | Weight |
|---|---|---|---|---|
| AIP504 | 4-Channel Analog Input Module | FA-M3 | 126 × 33 × 130 | 0.3 kg |
| ADV141-S13 | Digital Output Module (Isolated Transistor) | FA-M3 | 126 × 33 × 130 | 0.3 kg |
| AMN33 | Pulse Input Module | FA-M3 | 126 × 33 × 130 | 0.3 kg |
| AIP827 | High-Speed Analog Input Module | FA-M3 | 126 × 33 × 130 | 0.3 kg |
| ADV151 | 16-Point Digital Output Module | FA-M3 | 126 × 33 × 130 | 0.3 kg |
FAQ (Q&A)
Q1: What type of serial ports are supported by ALR121-SE1?
A1: It supports RS-232C and RS-485 serial communication standards.
Q2: Is the module configurable via software?
A2: Yes, all key parameters can be configured using Yokogawa’s programming tools.
Q3: Does this module support full-duplex communication?
A3: Yes, it supports both full-duplex and half-duplex modes depending on configuration.
Q4: What industries commonly use this module?
A4: It’s widely used in process control, manufacturing, utilities, and water treatment.
Q5: How is isolation achieved?
A5: The module features optical isolation to prevent signal noise and ground loops.
Q6: Can it be mounted directly on a DIN rail?
A6: Yes, it’s designed for DIN rail installation in control cabinets.
Q7: What is the maximum communication speed?
A7: It supports up to 115.2 kbps transmission speed.
Q8: Is it suitable for SCADA integration?
A8: Absolutely. It provides stable serial input for SCADA and PLC systems.
Q9: What kind of devices can it connect to?
A9: It can connect to meters, controllers, analyzers, and serial-based field equipment.
Q10: What is its operating temperature range?
A10: The module operates reliably between 0°C and 55°C.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.