Overview
The DR8 relay module provides zero-crossing detection, supports both DALI-2 (DT7) and DMX512/RDM control, and switches up to 8 channels of AC or DC loads using volt-free relay outputs. Channel behavior can be configured via the NFC Lighting App or WiFi-RDM App/address programmers.
Specifications
| Model | DR8 |
|---|---|
| Input Signal | DALI-2 DT7, DMX512/RDM |
| Input Voltage | 100–240V~ , 50/60Hz |
| Number of Channels | 8 |
| Load Output | Max. 8 × 12A (resistive, inductive or capacitive loads) |
| Switching Voltage | Max. 250V~ / 30V =⎓ |
| Relay Inrush Current | 240A @ 3ms |
| Protection | Zero-crossing protection |
| Operating Temperature | -25°C ~ 50°C |
| Safety & EMC Standards | ETSI EN 301 489-1 V2.2.3, ETSI EN 301 489-3 V2.3.2 |
| LVD Safety Standards | IEC 61347-2-11:2024, IEC 61347-1:2024 |
| DALI-2 Standards | IEC 62386-101, 102, 208 |
| Product Dimensions | L107 × W88 × H59 (mm) |
| Package Dimensions | L109 × W94 × H60 (mm) |
| Net Weight | 310g ± 10g |
| Mounting | DIN-rail mounting (compatible with TS-35/7.5 and TS-35/15) |
Setup & Configuration
- Mount the DR8 on a compatible 35 mm DIN rail (TS-35/7.5 or TS-35/15).
- Wire the AC or DC load outputs according to your application (the manual provides AC and DC wiring diagrams).
- Power off the driver before setting parameters.
- Choose configuration method:
- NFC Lighting App: Use an NFC-capable phone to read/write driver data. In the app, use Parameter Management to configure DALI or DMX settings, then tap Write to apply.
- WiFi-RDM App / RDM address programmer: Use an RDM address programmer (RDM protocol compliant) and the WiFi-RDM App to configure DMX address, address mode, system failure state, and related parameters.
- Set address mode according to the desired grouping/independent control using CH01, CH02, CH04, or CH08.
Features
- Relay module with zero-crossing detection and high inrush-current capability.
- Supports both DALI and DMX512 operating modes.
- DALI-2 certified and compliant with Device Type 7 (DT7) requirements and IEC 62386-101, IEC 62386-102 and IEC 62386-208.
- Complies with the DMX512 protocol and supports RDM remote device management.
- The NFC Lighting App or a DALI master controller can be used to configure the DALI address for each channel, power-on state, system failure state and other parameters.
- The NFC Lighting App or WiFi-RDM App can be used to configure the DMX start address, address mode, system failure state and other parameters.
- Both DALI and DMX support CH01, CH02, CH04 and CH08 address modes, enabling grouped multi-channel control or independent channel control.
- Volt-free relay outputs support the switching of AC or DC load circuits for a wide range of applications.
- Each channel supports a maximum current of 12 A for reliable operation.
- Wide input voltage range: 100–240 Vac.
- Compatible with standard 35 mm DIN rails.
Technical Specifications
| Category | Parameter | Specification |
|---|---|---|
| Input and Output | Model | DR8 |
| Input Signal | DALI-2 DT7, DMX512/RDM | |
| Input Voltage | 100-240V~, 50/60Hz | |
| Number of Channels | 8 | |
| Load Output | Max. 8×12A (resistive, inductive or capacitive loads) | |
| Switching Voltage | Max. 250V~/30V =⎓ | |
| Relay Inrush Current | 240A@3ms | |
| Environment | Operating Temperature | -25°C ~ 50°C |
| Protection | Protection | Zero-crossing protection |
| Safety & EMC Standards | EMC Standards | ETSI EN 301 489-1 V2.2.3, ETSI EN 301 489-3 V2.3.2 |
| Safety Standards (LVD) | IEC 61347-2-11:2024, IEC 61347-1:2024 | |
| DALI-2 Standards | IEC 62386-101, 102, 208 | |
| Others | Product Dimensions | L107×W88×H59 (mm) |
| Package Dimensions | L109×W94×H60 (mm) | |
| Net Weight | 310g±10g |
Dimensions
Unit: mm
Terminal Description
Installation
DIN-rail mounting. Compatible with TS-35/7.5 and TS-35/15 rails.
Wiring Diagrams
DALI Application
(1) AC load output wiring
(2) DC load output wiring
DMX Application
When the DMX data value is below 50, the output switches off. When the DMX data value is above 200, the output switches on. When the DMX data value is between 50 and 200, the output retains its previous on/off state.
(1) AC load output wiring
(2) DC load output wiring
Mode and Address Setting Table
| Mode | CH01 | CH02 | CH04 | CH08 | |
|---|---|---|---|---|---|
| Channel | Address | 1 Address | 2 Addresses | 4 Addresses | 8 Addresses |
| Channel 1 | — | 1 | 1 | 1 | 1 |
| Channel 2 | — | 1 | 1 | 1 | 2 |
| Channel 3 | — | 1 | 1 | 2 | 3 |
| Channel 4 | — | 1 | 1 | 2 | 4 |
| Channel 5 | — | 1 | 2 | 3 | 5 |
| Channel 6 | — | 1 | 2 | 3 | 6 |
| Channel 7 | — | 1 | 2 | 4 | 7 |
| Channel 8 | — | 1 | 2 | 4 | 8 |
Using the WiFi-RDM App
1. The DR8 can be used with address programmers that comply with the standard RDM protocol. The LTECH WiFi-RDM01 RDM address programmer is recommended. The App can be used to configure the DR8 address mode, system failure state, unicast/multicast settings and other parameters. For details, refer to the WiFi-RDM01 user manual.
* The WiFi-RDM01 address programmer and controller are sold separately.
2. Use the App to configure the DMX address, address mode and system failure state.
Available address modes:
- CH01: 1 address for 8 channels
- CH02: 2 addresses for 8 channels
- CH04: 4 addresses for 8 channels
- CH08: 8 addresses for 8 channels
- a. Tap the field next to Address to edit the address.
- b. Tap Identifier to view detailed product information.
- c. Tap the programming button to enter the parameter editing screen.
- d. Tap the device number to send an identification command.
Using the NFC Lighting App
Scan the QR code below with your mobile phone and follow the prompts to complete the APP installation (Requires an NFC-capable Android phone, or an iPhone 8 and later compatible with iOS 13 or higher).
* Before you begin setting the parameters of the driver, please make sure the driver is powered off.
Read/Write the LED driver
Use your NFC-capable phone to read LED driver data, then edit the parameters and write them directly to the driver.
1. Read the LED driver
On the APP home page, click 【Read/Write LED driver】, then keep the programmer’s sensing area close to the NFC sensing area of the driver to read the driver parameters.
2. Edit Parameters
Tap Parameter Management to configure the DALI start address, DALI advanced template, power-on state, system failure state, DMX address mode, DMX start address and other advanced parameters.
- DALI Mode: Configure the DALI address mode, DALI address for each channel, power-on state and system failure state.
- DMX Mode: Configure the DMX address mode, DMX address, address increment and system failure state.
- DMX Control Logic: When the DMX data value is below 50, the output switches off. When the DMX data value is above 200, the output switches on. When the DMX data value is between 50 and 200, the output retains its previous on/off state.
3. Write to the driver
After completing the parameter settings, click 【Write】 in the upper right corner, and keep the programmer’s sensing area close to the NFC sensing area of the driver to apply the parameters.
Attentions
- • Products shall be installed by qualified professionals.
- • LTECH products are non-waterproof and not lightningproof (special models excepted). Please avoid sun and rain. When installed outdoors, ensure they are mounted in a waterproof enclosure or in an area equipped with lightning protection devices.
- • Good heat dissipation will prolong the working life of products. Please ensure good ventilation.
- • During installation, avoid placing the product near large metal objects or stacking multiple units, as this may cause signal interference and affect operation.
- • Avoid installation in lightning-prone areas, strong magnetic fields, or high-voltage areas.
- • Please check if the working voltage used complies with the parameter requirements of products.
- • The diameter of wire used must be able to load the light fixtures you connect and ensure firm wiring.
- • Before you power on products, please make sure all the wiring is correct in case of incorrect connection that causes damage to light fixtures.
- • If a fault occurs, please do not attempt to fix products by yourself. If you have any questions, please contact your suppliers.
* This manual is subject to changes without further notice. Product functions depend on the goods. Please feel free to contact our official distributors if you have any questions.
Warranty Agreement
- • Warranty periods from the date of delivery: 5 years.
- • Free repair or replacement services for quality problems are provided within warranty periods.
Warranty exclusions below:
- • Beyond warranty periods.
- • Any artificial damage caused by high voltage, overload, or improper operations.
- • Products with severe physical damage.
- • Damage caused by natural disasters and force majeure.
- • Warranty labels and barcodes have been damaged.
- • No contract signed by LTECH.
- 1. Repair or replacement provided is the only remedy for customers. LTECH is not liable for any incidental or consequential damage unless it is within the law.
- 2. LTECH has the right to amend or adjust the terms of this warranty, and release in written form shall prevail.
Troubleshooting
- DMX behavior not matching expectations: Check the DMX control logic: if DMX value is below 50, the output switches off; above 200, the output switches on; between 50 and 200, the output retains its previous on/off state.
- Unit does not respond after configuration: Confirm configuration parameters were written correctly (for NFC, keep the phone sensing area close to the driver sensing area during read/write) and ensure the driver was powered off before parameter setting.
- Possible signal interference: Avoid installing near large metal objects and avoid stacking multiple units, as this may cause signal interference and affect operation.
- No output / suspected wiring issue: Verify working voltage compatibility and ensure wiring is correct before powering on to prevent incorrect connections from damaging connected fixtures.
- System failure / control ambiguity: Re-check the configured system failure state using the chosen app/programmer.
FAQ
- What control modes does the DR8 support?
- It supports both DALI-2 (DT7) and DMX512/RDM operating modes.
- How does the DR8 react to DMX values for switching?
- When DMX data value is below 50, the output switches off; above 200, the output switches on; between 50 and 200, it retains its previous on/off state.
- What address modes are available for multi-channel control?
- CH01, CH02, CH04 and CH08 address modes are supported, enabling grouped multi-channel control or independent channel control.
- What is the maximum current per channel?
- Each channel supports a maximum current of 12 A.
- What mounting method is supported?
- DIN-rail mounting is supported and is compatible with TS-35/7.5 and TS-35/15 rails.
Documents / Resources
 | DR8 LED Controller Relay Module |
References
- WiFi-RDMwww.ltech.cn
- User Manualmanual.tools