TRANE D159728G02 Relay Board Fire Alarm Control Audio D156120G02 RS485 Ethernet

( Brand: Trane ), ( Manufacturer Part Number: D159728G02 ), ( Part Type: Fire Control Board Alarm ), ( Voltage: 24v, 240v ), ( Material: Pcb )

Review TRANE Relay Board Fire Alarm Control Audio Rs485 Ethernet Lot

The **Trane D159728G02** and **D156120G02 Relay Board** represent a sophisticated integration of fire alarm control, audio management, and advanced communication technologies, designed to enhance the reliability, efficiency, and connectivity of building automation systems. These high-performance relay boards are engineered by Trane, a leader in HVAC and building infrastructure solutions, to seamlessly interface with fire alarm systems, audio distribution networks, and other critical building controls via robust communication protocols. The **D159728G02** and **D156120G02** are specifically crafted to provide precise control over relay outputs, enabling the activation and deactivation of alarms, emergency lighting, HVAC shutdowns, and other safety-critical functions with unparalleled accuracy and speed. Equipped with **RS-485 communication**, these boards facilitate long-distance, high-speed data transmission, ensuring real-time coordination between fire alarm panels, building management systems (BMS), and other intelligent devices across large-scale facilities such as hospitals, data centers, commercial office buildings, and industrial complexes. The inclusion of **Ethernet connectivity** further amplifies their versatility, allowing for seamless integration with modern IT networks, cloud-based monitoring platforms, and other IP-enabled systems, thereby enabling centralized management, remote diagnostics, and predictive maintenance capabilities.

Beyond their core relay control functions, these boards are engineered to support **audio distribution systems**, enabling the integration of emergency voice communication, public address (PA) systems, and background music (BGM) into the broader fire safety infrastructure. This dual functionality ensures that in the event of an emergency, building occupants receive clear, timely instructions while maintaining operational continuity through coordinated audio alerts. The **D159728G02** and **D156120G02** are built to meet stringent industry standards, including **NFPA 72 (National Fire Alarm and Signaling Code)** and **UL (Underwriters Laboratories) certifications**, guaranteeing compliance with fire safety regulations and ensuring the highest levels of reliability and performance in critical applications. Their modular design allows for easy installation and scalability, accommodating a wide range of system configurations without compromising on functionality or ease of use. Whether deployed in a standalone setup or as part of a larger, integrated building automation ecosystem, these relay boards serve as a cornerstone for enhancing safety, operational efficiency, and technological interoperability in modern infrastructure.

### **Pros and Cons of purchasing a Trane D159728G02 (D156120G02) Relay Board for Fire Alarm Control, Audio, RS-485, and Ethernet**

#### **Pros**

1. **Integration with Trane HVAC Systems**

- The D159728G02 is designed specifically for Trane s building automation systems, ensuring seamless compatibility with existing Trane controllers (such as the Tracer SC, Tracer 3000, or other Trane BACnet networks).

- Works well with Trane s fire alarm systems, allowing centralized control of HVAC operations during fire events.

2. **Fire Alarm Control Capabilities**

- Supports relay outputs for fire alarm system integration, enabling automatic shutdown or modulation of HVAC equipment when a fire is detected.

- Can interface with standard fire alarm panels (e.g., Siemens, Honeywell, or other BACnet-compliant systems) via RS-485 or Ethernet.

3. **Audio Control Functionality**

- Allows for integration with public address (PA) systems, emergency voice communication, or background music systems.

- Can trigger audio announcements (e.g., fire alarms, evacuation instructions) through relay or digital control.

4. **RS-485 Communication**

- Provides a robust, long-distance communication protocol (up to 1.2 km per segment) for connecting to other building automation devices.

- Supports BACnet MS/TP (Master-Slave Token Passing), a widely used protocol in commercial HVAC and fire safety systems.

5. **Ethernet Connectivity**

- Enables IP-based communication, allowing remote monitoring, control, and integration with IT networks or cloud-based building management systems.

- Supports TCP/IP, facilitating data logging, diagnostics, and software updates over a network.

6. **Modular and Scalable**

- Can be part of a larger Trane system, allowing for expansion with additional relay boards, sensors, or controllers.

- Works within Trane s open architecture, reducing dependency on proprietary solutions.

7. **Reliability and Brand Support**

- Trane is a well-established manufacturer in HVAC and fire safety, offering strong technical support and warranty coverage.

- Designed for commercial and industrial applications, ensuring durability in demanding environments.

8. **BACnet Compliance**

- Full support for BACnet, a standardized communication protocol for smart buildings, ensuring interoperability with other BACnet devices.

- Enables advanced features like remote diagnostics, energy management, and automated responses.

---

#### **Cons**

1. **Limited to Trane Ecosystem**

- Primarily designed for Trane systems, which may require additional gateways or adapters if integrating with non-Trane fire alarm or HVAC equipment.

- Not as flexible for mixed-vendor installations compared to universal relay boards.

2. **Complex Installation and Configuration**

- Requires familiarity with Trane s software (e.g., Tracer SC, Tracer 3000) and BACnet protocols, which may necessitate specialized training.

- Wiring and setup can be more involved than plug-and-play solutions, especially for non-technical users.

3. **Cost Considerations**

- As a branded Trane product, it may be more expensive than generic relay boards or off-the-shelf solutions.

- Additional costs may arise for programming, integration, or third-party software licenses.

4. **Dependence on Network Infrastructure**

- RS-485 and Ethernet require proper cabling, termination, and network setup, which can be a challenge in older buildings.

- Network failures or IP conflicts could disrupt fire alarm or HVAC control functions.

5. **Limited Physical Relay Outputs**

- The D159728G02 may have a fixed number of relay contacts (typically 24V AC/DC), which might not suffice for large-scale fire alarm or HVAC control requirements.

- For extensive applications, multiple units or additional relay modules may be needed.

6. **Software Dependency**

- Full functionality relies on Trane s building automation software, which may require periodic updates or maintenance.

- Compatibility issues could arise with newer software versions if not properly tested.

7. **Potential Latency in Fire Alarm Responses**

- While Ethernet and RS-485 are fast, network delays could theoretically impact the speed of fire alarm-triggered HVAC shutdowns, though this is usually negligible in well-designed systems.

8. **Training and Expertise Required**

- Proper configuration and troubleshooting may require hiring a Trane-certified technician or building automation specialist.

- On-site training for facility staff may be necessary for effective operation and maintenance.

---

### **Conclusion**

The **Trane D159728G02 (D156120G02) Relay Board** is a **highly specialized, reliable, and integrated solution** for facilities already using Trane s HVAC and fire safety systems. Its strengths lie in **seamless compatibility, advanced communication protocols (BACnet, RS-485, Ethernet), and robust fire alarm control capabilities**. It is ideal for **commercial, industrial, or large-scale buildings** where Trane s ecosystem is already in place and where long-term support and interoperability are priorities.

However, it is **not a one-size-fits-all solution**. If your facility uses **non-Trane systems** or requires **simpler, more flexible relay boards**, a generic or third-party option might be more cost-effective. Additionally, the **complexity of installation, programming, and network dependencies** means it is best suited for **technically experienced teams** or those willing to invest in training.

For **new installations or retrofits within a Trane-dominated environment**, this relay board is a **strong recommendation** due to its reliability and integration benefits. For **mixed-vendor systems or budget-conscious projects**, alternatives should be evaluated.

---

### **Final Recommendation**

- Your building already uses Trane s HVAC or fire alarm systems.

- You require **BACnet, RS-485, and Ethernet integration** for advanced building automation.

- You prioritize **long-term support, reliability, and seamless control** over cost savings.

- Your team has the expertise (or is willing to invest in training) to configure and maintain it.

- You are working with **non-Trane fire alarm or HVAC equipment** and need broader compatibility.

- Your project has a **tight budget** and generic relay boards would suffice.

- Your facility lacks **proper network infrastructure** for RS-485 or Ethernet.

- You require **simpler, plug-and-play solutions** without deep programming.

For most **large commercial or industrial buildings with Trane systems**, this relay board is a **sound investment** that enhances fire safety, HVAC control, and overall building automation efficiency.

Details:

Hard-to-find industrial control boards pulled from working environment. Clean boards. Good used condition. No visible burns, cracks, or missing components.

Sold as shown. Fire Alarm Control / Audio Board, Industrial control PCB with: IN/OUT A B, RS-485 communication bus, Loop circuits LOOP1 LOOP2, Ethernet port Pulse Jack, Linux Spartan processor, Removed from system, Not fully system tested, Boards appear complete and in good physical condition, Ideal for: Repair, Replacement, Parts resale, Carefully packaged, fast shipping!, Please verify compatibility before purchase. Trane Relay Control Board, Part #: D156120G02 CMT06195, 3 Settler AZ2150 relays, Bench tested relays actuate, 2.

part #: d159728g02 prices

• $19.99-$87.40

specifications hvaapa:

• brand: Trane
• mpn: D159728g02
• part type: Fire Control Board Alarm
• voltage: 24v, 240v
• material: Pcb

payments hvaapa:

• credit card: Visa
• other
• wallet: Google-pay

shipping hvaapa:

• class: Standard
• type: Calculated
• carrier: USPS
• service: USPS Ground Advantage
• cost: $0.00
• transit: 5-11 Days

seller hvaapa:

• city: Cabot, Arkansas
• # reviews: 0
• rating: 0.0%

returns hvaapa:

• time: 14 Days
• paid by: Buyer
• method: Money back
• policy: Returns Accepted

offer hvaapa:

• options: Ship-to-home
• availability: In Stock
• best offers: True
• sold: 0
• started: March 27, 2026
• quantity: 1

general hvaapa:

• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Controls Circuit Boards
• condition: Used

Trane D159728G02 Is Similar To:

• 21c140501g38 American Standard Trane Control Board Ks (25% similar) 30 day warranty. Free priority shipping. Don't see the one you are looking for...(June 13th, 2018)
• 50100821 Trane Service First Board (22.2% similar) Used board in working condition...(July 1st, 2018)
• 6400-0882-01 Trane Board Rev (25.2% similar) Part: 6400-0882-01 prices...(August 5th, 2018)
• Ay28x084 Trane Low Ambient Cooling Control (28.8% similar) Condition is new. Shipped with USPS priority mail. Low ambient cooling control AY28X084...(February 25th, 2019)
• Bayasct001 Trane Timer Kit And Td Relay New In Box (24.1% similar) BAYASCT001 anti-short, timer kit and relay - new in box good truck stock...(September 23rd, 2018)
• Brd02079 Trane Servicefirst Board Upcm (24.8% similar) ...(May 31st, 2017)
• Brd0968 Trane Interface Board (25% similar) Brand new control...(October 24th, 2018)
• Cnt 0518 Trane Control Cnt0518 (28.3% similar) Trane control CNT0518 cant 01-07 new, old stock...(November 13th, 2017)
• Cnt01866 Cnt 1866 Trane American Standard New Furnace Control Circuit Board (38% similar) A special order part that did not fix the problem. Partial list of Trane,American standard units that use this item: DCY060F1M0AF DCY060F3M0AF DCY060F4M0AF GSHC018A GSHC018B GSHC018C GSHC024A GSHC024B GSHC024C GSHC030A GSHC030B GSHC030C GSHC036A GSHC036B GSHC036C GSHC042A GSHC042B GSHC042C GSHC048A ...(October 18th, 2018)
• Cnt02068 Trane New Freeze Control Off Free Shipping (35.8% similar) Part: CNT02068 prices...(January 4th, 2019)