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L-DALI: Relay Module



The LDALI‑RM Relay Modules enable the control of standard consumers via a DALI channel. Typical application scenarios are the integration of non-DALI luminaires or other loads like fans in toilets or washrooms and motors for partition walls or screens in DALI lighting applications.

The built-in relay contact can be used for currents of up to 10 A or loads of up to 2.500 VA, respectively. It supports a wide voltage range of 120 – 347 V AC and up to 30 V DC. Zero cross switching technology is used to be able to handle the large in-rush currents typically found in lighting applications. For legacy dimmable ballasts the LDALI-RM modules are also equipped with an 0-10 V and 1-10 V interface, which can be used together with the relay contact to control these types of loads via DALI.

Together with the LOYTEC DALI controllers or LROC‑40x room automation controllers, the LDALI‑RM modules act as programmable switching output modules. The integration of the module in the DALI network follows the same simple steps as the integration of a DALI lamp. The device supports the DALI specification IEC 62386‑208 (Device Type 7, “switching function”) for non-dimmable loads and the DALI specifications IEC 62386‑206 (Device Type 5, “converter”) for loads dimmable via the 0 - 10 V and 1 – 10 V interface, respectively. The LDALI‑RM modules are directly connected to a DALI channel and also supplied with energy by that channel.

As a unique safety feature the relay state for fault conditions can be configured: In case of a loss of power on the DALI bus, the relay will switch to the position as defined with the DALI configuration register “System Failure Level”.

The LDALI-RM module comes with two housing options: While the LDALI-RM3 is designed for installation in distribution boxes or behind standard plugs in installation boxes, the LDALI-RM4 allows installation on US-style fixtures or junction box ½’’ knockouts (“spud-mount”).

L-DALI: Relay Module Products


DALI Relay Module 10 A, Analog Interface 0 – 10 V and 1 – 10 V

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Documentation and Software
3D View

LDALI-RM4DALI Relay Module 10 A, Analog Interface 0 – 10 V and 1 – 10 V, “spud-mount”
Start quote request
Documentation and Software
3D View


  • Easy integration into LOYTEC L‑DALI lighting systems and LROC‑40x room automation controllers
  • Device configuration with the free L‑DALI Configurator or via the built‑in web server of the L-DALI controller
  • Programmable switching output for standard consumers in the power grid
  • Universal voltage support (120 – 347 V AC)
  • Up to 64 LDALI‑RM Relay Modules per DALI channel with sufficient dimensioned bus supply
  • Supplied via the DALI channel
  • Potential‑free, bi-stable relay make contact
  • Analog Interface 0 – 10 V and 1 – 10 V for legacy dimmable lamps
  • DALI specification IEC 62386‑208 (Device Type 7 – Switching Function) supported
  • DALI specification IEC 62386‑206 (Device Type 5 – Converter) supported
  • Configurable relay position in case of power loss
  • Zero cross switching function


Dimensions in mm


ldali rm3 dimension 1.0


Dimensions (mm) 51 x 41 x 21 (L x W x H) 51 x 51 x 21 (L x W x H)  
Power supply DALI bus, typ. 3.4 mA (0-10V/1-10V connected), respectively 2 mA (0-10V/1-10V not connected) at 16 V DC
Operating conditions 0 °C to 50 °C, 10 – 90 % RH, noncondensing, degree of protection: IP20

1 x DALI, protected against overvoltage (power supply)
1 x Analog interface 0 – 10 V or 1 – 10 V


For use with


Resource limits
Number of LDALI-RM3/LDALI-RM4 64 per DALI channel, with sufficient dimensioned DALI bus power supply
Connection wires profile 0.5 – 1.5 mm² [AWG 24 – 16]
Wire stripping length 8 mm [0.31 in]
Max. switching power 2 500 VA, 300 W
Nominal switching capacity AC

10 A, 120 V AC
10 A, 250 V AC
8 A, 277 V AC
6 A, 347 V AC

Nominal switching capacity DC

10 A, 30 V DC

Relay contact switching voltage 120 - 347 V AC / 30 V DC
Switching cycle 1.5 x 10⁵
Min. switching interval 500 ms

Max. average switching frequency

20 times/min

Interface (0 – 10 V / 1 – 10 V) current sink 1 mA