The DS04L is a Luxom network unit with an on board controller for decentralised management of 4 relay ports and 5 binary inputs. (no master controller is needed)
Push buttons, presence detectors, transistor signals and door contacts can be connected directly to the 5 inputs.
Each separate relay on the DS04L module has a dry contact rated 250 VAC/16A.
Every relay is protected against high currents with a VDR resistor and is equipped with a LED for status feedback.
The configuration of this module is done via the Luxom network and is stored on board in a non volatile memory.
After a power failure, every output can individually be setup to stay OFF, to go ON, or to revert to the state before power failure. (status is stored in the module)
The on-board software features in this module are more extensive than those present in the DS08L module.