For digital control of:

• up to 4 twin-coil magnetic accessories (e.g. turnouts or signals)
• up to 8 single-coil magnetic accessories (e.g. uncoupling tracks)
• up to four permanent power switch units (DSU) (e.g. for turnout-/ and road lights)

The voltage will be supplied to the decoder by a separate input from an alternating voltage output of a model railway transformer (12 to 18Volt ~) or from an insulated power supply unit within a range of 15 to 24 Volt =. Simple and secure connection of turnouts, signals and uncoupling tracks by screw clips.

S-DEC-4 is a 4-fold turnout decoder with self learning decoder address:

• The decoder address can just be set by pushing the S-DEC-4 programming key and then a key on the turnout-switchboard, or by a switch command through a PC with connected INTERFACE.
• The decoder address will be permanently stored, but can always be changed by pressing the programming key again. It’s as simple as that !

Available as ready to use finished module, as finished module in a case or as kit on a 86*76 mm pc-board with four bores for mounting purposes. (Suitable installation material can be found under accessories).
Each of the 4 decoder outputs can be loaded with current up to 1 Ampere. This allows also the shifting of jammed turnouts. It is possible to switch 2 turnouts-/ or 1 turnout and one signal simultaneous.
The S-DEC-4-DC compatible to the DCC data format can now shift turnouts with the function keys F1 to F4 of loc-addresses (e.g. Lokmaus 2® or R3® from Roco)!
If you require a feedback of the turnout position please load the description of turnout_feedback to your pc.
The decoder from our Digital-Professional-Series can be operated without any difficulty from your digital controlled model railway. This decoder is 100% compatible to the Märklin-Motorola data format or the DCC standard.
The finished module and the finished module in a case comes with 24 month warranty.
Each S-DEC-4 decoder will be supplied with a detailed operating-/ assembly instruction. Those instructions can be found within the next section.
The S-DEC-4 is available as a kit (-B), as checked finished module (-F) or as checked finished module in a case (-G).

Instructions regarding this article can be found here: Downloads S-DEC-4.
Instructions for all LDT-Components can be found here: Overview Downloads.

Sample-connections regarding this article can be found here: Sample-Connections S-DEC-4 (Märklin-Motorola) and Sample-Connections S-DEC-4 (DCC).
Sample-connections for all LDT-Components can be found here: Overview Sample-Connections.

Attention: Products can only be added to the Wish List, if you are registered as customer at the LDT WebShop or if you are initially registered by interest of our products.

Add to Wish List: S-DEC-4-DC-B (Part-No.: 910211): 4-fold turnout decoder for DCC Digital as a kit (22,90 €*). Add to Wish List: S-DEC-4-DC-F (Part-No: 910212): 4-fold turnout decoder for DCC Digital as a finished module (31,50 €*). Add to Wish List: S-DEC-4-DC-G (Part-No: 910213): 4-fold turnout decoder for DCC Digital as a finished module in a case (34,90 €*). Add to Wish List: S-DEC-4-MM-B (Part-No: 910311): 4-fold turnout decoder for Märklin-Motorola as a kit (22,90 €*). Add to Wish List: S-DEC-4-MM-F (Part-No: 910312): 4-fold turnout decoder for Märklin-Motorola as a finished module (31,50 €*). Add to Wish List: S-DEC-4-MM-G (Part-No: 910313): 4-fold turnout decoder for Märklin-Motorola as a finished module in a case (34,90 €*). * All prices incl. VAT, plus Shipping.

Subject to technical changes and errors.
© 2022 by LDT
Märklin and Motorola are registered trade marks.