ELAUSYS / DOE-825
KNX Digital Output Extension 8x 24 V
The DOE-825 is an eight-channel transistor-output extension for the MSA-810 KNX master actuator, rated at 0.25 A per channel for 12–30 VDC resistive loads. It requires an MSA-810 master and is configured through the master’s ETS application.
The product
Designed for your installation.
Eight low-voltage outputs for valves, relays, and indicators
The DOE-825 is an eight-channel transistor-output extension for the MSA-810 KNX master actuator, rated at 0.25 A per channel for 12–30 VDC resistive loads. Switch compatible low-voltage loads such as DC electrothermic valve actuators and indicator LEDs. Relay or contactor interfaces can be used where their electrical requirements match the outputs.
Control functions and applications
Configure outputs for switching or heating control using on/off, PWM, or PI modes. Blind mode uses channel pairs with suitable external relays; the extension does not directly switch a mains-voltage motor.
Select loads and channel configurations within the stated electrical limits.
Integrate with the master actuator system
The DOE-825 is an extension of the Elausys Universal KNX Actuator System and cannot operate independently. Its channels appear in the MSA-810 application, using the master’s KNX address.
Plan the module combination in ElauPro. System capacity depends on the extension types and their channel requirements. The combined limit of 40 channels at 10 A applies to MSA-810, SAE-810, and SAE-2410.
Power, installation, and configuration
The master supplies the extension’s control electronics through the side connector. Connect an external 12–30 VDC supply for the loads to DC IN.
Mount the module on a 35 mm DIN rail in the same row as the master and connect it to the extension chain. Generate the system application in ElauPro and configure the channels in ETS5 or ETS6. Configured KNX operation does not require an internet connection.
Specifications
- Reference
- DOE-825
- Manufacturer
- ELAUSYS
| Parameter | Specification |
|---|---|
| Product reference | DOE-825 |
| System role | Extension for MSA-810; cannot operate independently |
| Outputs / capacity | 8 transistor outputs |
| Output / load voltage | 12–30 VDC, supplied through DC IN |
| Load / output rating | 0.25 A per channel, resistive |
| Operating modes | Switching, blind control through external relays, heating-valve control |
| Control functions | On/off, PWM and PI heating control; delays, staircase function, scenes, blocking, and hour counters |
| Limits and compatibility | Low-voltage DC outputs only; load and coil characteristics must match the output specification |
| Control power supply | From MSA-810 through the side connector |
| Load / bus supply | External 12–30 VDC supply through DC IN, sized for the connected loads |
| KNX integration | Via MSA-810; no separate KNX address |
| Additional technical details | Blind mode uses paired outputs with suitable external relay interfaces |
| Terminals | Screw terminals, up to 2.5 mm², 0.5 Nm |
| Housing | 2 SU, IP20 |
| Mounting | 35 mm DIN rail |
| Operating temperature | 0 to +45 °C |
| Configuration | ETS5 / ETS6 with the ElauPro-generated MSA-810 application |
Key features
- 8 transistor outputs
- Switch 12–30 VDC resistive loads at up to 0.25 A per channel
- Switching, blind control through external relays, heating-valve control
- On/off, PWM and PI heating control, delays, staircase function, scenes, blocking, and hour counters
- Separate external supply required for the loads
- Requires an MSA-810 master, with no separate KNX address
- Configure in ETS5 or ETS6 using the ElauPro-generated application
Documents & support
PDFDatasheet R1.00Product document · Opens in a new tabPDFSafety-and-Regulatory-Notice-ENProduct document · Opens in a new tabBrowse product supportFAQ
Frequently Asked Questions
Can this extension operate on its own?
No. It requires an MSA-810 master and is configured within the master’s ETS application. It does not need a separate KNX address.
Can it switch 230 V loads?
No. The outputs are for 12–30 VDC loads. Use a suitable mains-rated switching actuator or an appropriate external relay interface for mains loads.
Does the master supply power to the loads?
No. The master powers the control electronics. Connect a separate 12–30 VDC load supply to DC IN.
How many valve actuators can share an output?
The combined load must meet the 0.25 A resistive rating and the output specification. Check the actuator’s operating and starting-current requirements before sizing the circuit.
What power supply is required?
From MSA-810 through the side connector. External 12–30 VDC supply through DC IN, sized for the connected loads.
How is it configured?
Generate the actuator-system application in ElauPro, then configure the channels and group addresses in ETS5 or ETS6. The master and extensions share one KNX address and application.