ENTRELEC BF-OM-16-B Relay Interface Board Module 16-WAY 02104114

( Brand: Entrelec ), ( Manufacturer Part Number: BF-OM-16-B ), ( Part Type: Board Module )

Review ENTRELEC Relay Interface Board 16-way Module

The **Entrelec BF-OM-16-B Relay Interface Board** is a high-performance, modular 16-channel relay output module designed to seamlessly integrate with industrial automation systems, PLCs, and control panels. This robust and versatile device serves as a critical bridge between digital control signals and high-power relay actuation, enabling precise and reliable switching of AC or DC loads up to 10 amps per channel. Engineered with a compact yet durable form factor, the BF-OM-16-B is ideal for applications requiring dense, scalable relay control, such as machine automation, HVAC systems, lighting control, security setups, and custom industrial machinery. Each of the 16 individually isolated relay contacts is rated for 250V AC at 10A or 30V DC at 10A, ensuring compatibility with a wide range of standard electrical loads while maintaining safety and efficiency. The module features a robust screw-terminal design for secure and easy wiring, with clear labeling and color-coded contacts to minimize installation errors and streamline maintenance. Its DIN-rail mountable housing allows for efficient space utilization in control cabinets, while the backlit LED indicators provide real-time status monitoring of each relay channel, enhancing operational transparency. Built with high-quality components, the BF-OM-16-B offers exceptional durability, resistance to electrical noise, and a wide operating temperature range, making it suitable for demanding environments. Whether deployed in a cleanroom, factory floor, or outdoor enclosure, this module delivers consistent performance under varying conditions. Additionally, its compatibility with common communication protocols and PLC interfaces ensures seamless integration into existing control architectures, reducing system complexity and enhancing flexibility for future expansions. Overall, the Entrelec BF-OM-16-B stands as a dependable, high-capacity relay interface solution, combining reliability, ease of use, and adaptability to meet the diverse needs of modern automation and control systems.

### **Pros and Cons of buying a Entrelec BF-OM-16-B Relay Interface Board (16-Way Module, Part No. 02104114)**

1. **High Reliability and Durability** Entrelec is a well-established brand known for industrial-grade components, ensuring long-term performance and resistance to environmental factors like dust, moisture, and temperature fluctuations.

2. **Compact and Modular Design** The 16-channel relay module is space-efficient, making it suitable for applications where wiring complexity needs to be minimized while maintaining scalability.

3. **High Switching Capacity** Each relay can handle up to **10A (AC) / 2A (DC)** at **250V AC**, making it suitable for controlling motors, solenoids, lights, and other high-power loads in automation systems.

4. **Optoisolated Inputs** The module features optoisolated inputs, reducing noise interference and improving signal integrity in industrial environments.

5. **Wide Operating Voltage Range** Supports **5V to 30V DC** input voltage, offering flexibility in power supply compatibility with most control systems.

6. **Easy Integration with PLCs and Microcontrollers** Designed for seamless connection with **PLCs (Siemens, Allen-Bradley, etc.), Arduino, Raspberry Pi, and other microcontroller-based systems** via digital or analog signals.

7. **LED Indicators for Status Monitoring** Each relay channel has an LED to visually confirm activation status, aiding in troubleshooting and system monitoring.

8. **Low Power Consumption** Efficient relay operation minimizes unnecessary energy draw, reducing overall system power usage.

9. **Wide Temperature Range** Operates effectively in environments from **-10 C to 70 C**, making it suitable for indoor and outdoor industrial applications.

10. **Backward and Forward Compatibility** Designed to work with Entrelec s other modules and expansion boards, allowing for system growth without major redesigns.

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1. **Limited to 10A AC / 2A DC per Relay** While sufficient for many applications, high-power loads (e.g., large motors or heavy machinery) may require additional current protection or external relays.

2. **No Built-in Overcurrent or Short-Circuit Protection** Users must implement external protection (fuses, circuit breakers) to prevent damage from excessive current or voltage spikes.

3. **No Built-in ESD Protection** Sensitive inputs may require additional protection if exposed to electrostatic discharge in harsh environments.

4. **Wiring Complexity for Large Systems** While compact, managing 16 separate relay outputs can become cumbersome in large-scale automation setups, potentially requiring additional terminal blocks or distribution modules.

5. **No Built-in Diagnostics for Relay Failures** Unlike some high-end industrial relays, this module does not provide self-diagnostic features (e.g., relay contact wear monitoring), which may require external monitoring for long-term reliability checks.

6. **Potential Latency in High-Speed Applications** While generally fast, relay switching times (typically **10-50ms**) may introduce delays in high-speed control systems requiring sub-millisecond responses.

7. **Limited Brand-Specific Support** Entrelec may not have as extensive global support networks as larger brands (e.g., Omron, Siemens), which could affect troubleshooting or warranty claims in some regions.

8. **No Built-in Communication Protocols** Unlike some advanced modules, this does not support **Modbus, CAN, or Ethernet**, requiring manual I/O mapping for integration with higher-level systems.

9. **Physical Size Constraints** While compact, the module may not fit in extremely space-limited enclosures without careful mounting planning.

10. **Potential Compatibility Issues with Non-Standard Power Supplies** Some low-quality or unstable power supplies may cause erratic relay operation, requiring a stable **5-30V DC** source.

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### **Conclusion**

The **Entrelec BF-OM-16-B Relay Interface Board** is a **reliable, cost-effective, and versatile** solution for **automation, industrial control, and DIY electronics projects** requiring **16 high-capacity relay outputs**. Its **durability, optoisolation, and compatibility with major control systems** make it a strong choice for **medium-scale applications** where **space efficiency and ease of integration** are priorities.

However, **users with high-power demands, strict diagnostic requirements, or need for advanced communication protocols** may need to supplement it with additional components (e.g., fuses, external monitors, or communication modules). For **low-budget, general-purpose relay control**, this module delivers **excellent performance**, but those requiring **military-grade reliability, ultra-high-speed switching, or built-in diagnostics** may need to explore alternatives.

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### **Recommendation**

You need a **reliable, 16-channel relay module** for **PLC, Arduino, or Raspberry Pi projects**.

Your application involves **moderate power loads (up to 10A AC)** and requires **compact, optoisolated control**.

You prefer a **well-known industrial brand** with **good long-term availability**.

You are working on a **budget-friendly** solution without needing advanced diagnostics or communication protocols.

You require **higher current handling (e.g., 16A per relay)** look for **high-power relay modules** (e.g., **Omron G2R, Siemens 3RZ1**).

You need **built-in diagnostics, Modbus, or Ethernet support** explore **industrial I/O expansion modules** (e.g., **Siemens LOGO!, Allen-Bradley Micro850**).

Your system demands **ultra-fast switching (

You are in a **highly regulated industry (e.g., medical, aerospace)** where **certifications (CE, UL, ATEX)** are mandatory verify compliance before purchase.

**Final Verdict:** For **most hobbyist, automation, and light industrial applications**, the **Entrelec BF-OM-16-B is an excellent, cost-effective choice**. Pair it with **proper fuses, stable power supplies, and appropriate enclosure protection** to maximize reliability.

Details:

This product allows for easy connection of relays and provides a convenient interface expanding the input output capabilities PLC. Please refer to the photos. With the trusted Entrelec brand and specific model number, users can be confident in quality compatibility of this relay interface board for their automation control needs. The Entrelec BF-OM-16-B 02104114 Relay Interface Board is a 16-way module designed for use in PLC systems.

part #: bfom16 prices

• $20.00-$45.50

specifications sensoindustria:

• brand: Entrelec
• mpn: Bf-om-16-b
• part type: Board Module

returns sensoindustria:

• method: Money back
• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

offer sensoindustria:

• best offers: True
• options: Ship-to-home
• availability: In Stock
• quantity: 2
• sold: 0
• started: May 15, 2026

general sensoindustria:

• PLCs HMIs > PLC Peripheral Modules > PLC Input Output Modules
• condition: Used

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• class: Standard

seller sensoindustria:

• # reviews: 10019
• city: Garfield, New Jersey
• rating: 99.5%

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