Home

Explore

View Cart

Deals

Saved

Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

BLOCKsignalling

L1-DC Automatic Passing Loop Controller

L1-DC Automatic Passing Loop Controller

BLOCKsignalling

L1-DC Automatic DC Model Railway Passing Loop Controller

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$55.00

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

Shopping designed around you.

Start selling

For brands

For creators

Build your store

Information

Shop Pay

Help center

Social

X (Twitter)

Instagram

Legal

Terms of Service

Privacy Policy

Your Privacy Choices

Powered by

|

Start selling for free

Language

© Shopify Inc. 2026

Quantity

1

You might also like

PTS1 Shuttle Controller

BLOCKsignalling

PTS1 DC Model Railway Shuttle Controller with Points Control

(1)

PPI4-KATO Points Position Indicator

BLOCKsignalling

PPI4-K KATO Model Railway Points Position Indicator - 8 Points

K-ADAPT Adaptor Boards for Kato Points

BLOCKsignalling

K-ADAPT Adaptor Boards for Kato Points

TKM2 Track Voltage Tester

BLOCKsignalling

TKM2 DC/DCC Model Railway Track Voltage Tester

REV7K-4A 15V DC High Power Reverse Loop Module (HM7000 TT:120 Compatible)

BLOCKsignalling

REV7K-4A High Power 15V DC Model Railway Autoreverser - Hornby™ HM7000 Compatible

(4)

TLC2A Traffic Light Controller

BLOCKsignalling

TLC2A Model Railway Traffic Light Controller with Fading

(1)

Infra-Red Sensors

BLOCKsignalling

Replacement Infra-Red Sensors for BLOCKsignalling Modules

(3)

Photocell Spare Pack of 10

BLOCKsignalling

LDR Photocell Light Sensor - Pack of 10 for DET8

Train-Tech RL1 Twin Channel Relay Controller for DC/DCC,Hampshire Models

18% off

Hampshire Models

Train-Tech RL1 Twin Channel Relay Controller for DC/DCC

Marklin 8946 - Manual Signal Controller (Z-scale)

Ajckids

Marklin 8946 - Manual Signal Controller (Z-scale)

800 5401

Black Forest® Hobby Supply Co

Circuitron 5401 All Scale AR-2 Automatic Reverse -- With Adjustable Delay

Denver Model Trains

Train Control Systems TCS | KA-N1 Keep Alive Device (2010) | .260 x .363 x .136" 6.6 x 9.2 x 3.5mm | N Scale

CDU2C-FC Fast Charge Capacitor Discharge Unit

BLOCKsignalling

CDU2C-FC Fast Charging Model Railway Capacitor Discharge Unit

(1)

REV2 Autoreverser (DC & DCC)

BLOCKsignalling

REV2 Universal DC/DCC Model Railway Autoreverser with Points Control

(2)

CDU4F Fast Charging Capacitor Discharge Unit

BLOCKsignalling

CDU4C-FC High Capacity Fast Charging Model Railway Capacitor Discharge Unit

SSM1 Station Stop Module

BLOCKsignalling

SSM1 DC Model Railway Station Stop & Shuttle Controller with Infra-Red Detection

M1 Universal Sequential Operations Module

BLOCKsignalling

M1 Universal Sequential Operations Module

SEC1B-DC Section Control Module

BLOCKsignalling

SEC1B-DC Automatic DC Model Railway Section Controller - Common Anode

BOD4-RLY Infra-Red Train Detector & Relay for Faller 161675

BLOCKsignalling

BOD4-RLY Infra-Red Train Detector & Relay for Faller 161675

CDU4F Fast Charging Capacitor Discharge Unit with Ready LED

BLOCKsignalling

CDU4C-FC Fast Charging Model Railway Capacitor Discharge Unit with Ready LED

Dapol

4A-001-001 DCC Signal Controller

Tomar Industries & Utah Pacific

Signal - Railroad Crossing Signal - 1 pair/pkg - HO Scale

Traintiques

Lionel 81639 LCS Accessory Switch Controller 2

8% off

DCCTRAIN

ROCO Z21 Digital Control Centre 10822

Rails of Sheffield

4.9

(1.5K)

SL10 Pack of 24 Rail Joiners (code 100)

SL10 Pack of 24 Rail Joiners (code 100)

SL310 Metal Rail Joiners * 12

PPI4-DC Points Position Indicator + Wired 3mm LEDs Red & Green

BLOCKsignalling

PPI4-DC Model Railway Points Position Indicator + Wired 3mm Red & Green LEDs

(1)

PPI5-DCC Points Position Indicator

BLOCKsignalling

PPI5 DCC Model Railway Points Position Indicator - 8 Points

IRP2-NS Points Controller

BLOCKsignalling

IRP2-NS Infra-Red Model Railway Points Controller with Automatic Train Routing

DAP2-G Semaphore Signal Controller for Dapol Servo Gantry Signals

BLOCKsignalling

DAP2-G Semaphore Signal Controller for Dapol Servo Gantry Signals

ASP2-NS Automatic Signal Control

BLOCKsignalling

ASP2-NS Infra-Red Model Railway Signal Controller - 2, 3 & 4 Aspect

TKM7K Track Voltage Tester for HM7000

BLOCKsignalling

TKM7K DC/DCC Model Railway Track Voltage Tester - Hornby HM7000

(1)

BLOCKsignalling IRP1 Infra-Red Automatic Points Controller

BLOCKsignalling

BLOCKsignalling IRP1 Infra-Red Automatic Points Controller

Tomar Industries & Utah Pacific

Signal Part - Grade Crossing Detection and Flasher Kit

Tao's Core Collection

HO Scale 1:87 Railroad Crossing Signals 2 Red LEDs with Circuit Board Flasher

DC Train Controller -- 2 Amps, Up to 24 Volt-Ampere, 16-Volt Accessory Output

Walthers

DC Train Controller -- 2 Amps, Up to 24 Volt-Ampere, 16-Volt Accessory Output

1BdrWorkshop

Railroad Wayside Signal Model, 1:4 Scale, Remote Control, 3D printed, Wall/Pole Mount

(4)

PSU4 Universal 12V Power Supply

BLOCKsignalling

PSU4 12-Output 12V DC Model Railway Power Supply Module

PPI4-DC Points Position Indicator

BLOCKsignalling

PPI4-DC Model Railway Points Position Indicator - 8 Points

(1)

SS1 DC Simple Shuttle

BLOCKsignalling

SS1 Simple DC Model Railway Shuttle Controller

DET8 Train Detector (8 Channel)

BLOCKsignalling

DET8 8-Channel Model Railway Train Detector

DAP1-NS Semaphore Switcher for Dapol Signals

BLOCKsignalling

DAP1-NS Infra-Red Model Railway Semaphore Signal Controller

(1)

CDU1C Fast Charge Capacitor Discharge Unit

BLOCKsignalling

CDU1C-FC Fast Charging Model Railway Capacitor Discharge Unit

Heljan.com

4.8

(3.1K)

Heljan O gauge Buckeye Couplers in a clear plastic bag with a white paper header card, on a white background.

Heljan O gauge Buckeye Couplers in a clear plastic bag with a white paper header card, on a white background.

Heljan O gear assembly for Class 26 and Class 33, featuring a black plastic housing with a silver metal pin and a small silver rod, shown below its original white paper packaging label.

TFL Traffic Light Controller (TFL-1, TFL-2 & TFL-4) 12V DC

BLOCKsignalling

TFL Traffic Light Controller (TFL-1, TFL-2 & TFL-4) 12V DC

17% off

Apollo Controllers

Apollo Single Model Railway Controller

(2)

Dwarvin Enterprises, Ltd.

1 Gauge Integrated Railroad Crossing Kit

ScaleSigns.com

⚫️Begin Automatic Block

Crossing Flashers -- Set of 2 Working Signals (Use with Crossing Signal Controller)-1

Walthers

Crossing Flashers -- Set of 2 Working Signals (Use with Crossing Signal Controller)

PPI4-DC Points Position Indicator + Dual Colour LEDs Red & Green

BLOCKsignalling

PPI4-DC Model Railway Points Position Indicator + Red & Green Dual-Colour LEDs

PPI4-DC Points Position Indicator + Wired 5mm LEDs Red & Green

BLOCKsignalling

PPI4-DC Model Railway Points Position Indicator + Wired 5mm Red & Green LEDs

SS2A DC Shuttle Controller with Acceleration and Speed Control

BLOCKsignalling

SS2A DC Model Railway Shuttle Controller with Speed Control

(4)

SDCC1-HP DCC Shuttle for O Gauge

BLOCKsignalling

SDCC1-HP High Power DCC Model Railway Shuttle Controller with Station Stops

ASP1A Infra-Red Aspect Signal Controller

BLOCKsignalling

ASP1A Infra-Red Model Railway Signal Controller - 2, 3 & 4 Aspect

REV1mini DCC Autoreverser

BLOCKsignalling

REV1mini DCC Model Railway Autoreverser

(2)

FROGmini Frog Juicer for Points/Turnouts

BLOCKsignalling

FROGmini DCC Model Railway Automatic Frog Juicer

(1)

Terminal Adaptor for BDL168 Breakout Boards

BLOCKsignalling

BD168 Model Railway Terminal Adaptor Board for Digitrax BDL168

Grade Crossing Signal Controller-1

Walthers

Grade Crossing Signal Controller

10% off

Apollo Controllers

Apollo Duet Model Railway Controller

Dapol

2L-001-001 N Gauge Motorised & Lit Semaphore Signal - GWR Home

(2)

SAS2-BR DC Shuttle with Station Stop & Acceleration

BLOCKsignalling

SAS2-BR DC Model Railway Shuttle Controller with Station Stops

(1)

SEC1B-DC Section Control Module

BLOCKsignalling

SEC1A-DC Automatic DC Model Railway Section Controller - Common Cathode

SDCC1 DCC Shuttle & Station Stop Controller

BLOCKsignalling

SDCC1 DCC Model Railway Shuttle Controller with Station Stops

SAS2-IR DC Shuttle with Infra-Red Detectors

BLOCKsignalling

SAS2-IR DC Model Railway Shuttle Controller with Infra-Red Detection

ASP1-NS Automatic Signal Control

BLOCKsignalling

ASP1-NS Infra-Red Model Railway Signal Controller - 2, 3 & 4 Aspect

ASP2A Infra-Red Aspect Signal Controller

BLOCKsignalling

ASP2A Infra-Red Model Railway Signal Controller - 2, 3 & 4 Aspect

(1)

DAP1A Automatic Semaphore Signal Controller

BLOCKsignalling

DAP1A Infra-Red Model Railway Semaphore Signal Controller

TT Ballast Glue Applicator

Proses Hobby Shop

Ballast Spreader & Gluer Combo for TT

Hobbyco

Controller with 1.0 amp Transformer

(2)

11% off

Hobbyco

Passing Contact Switch Yellow

(1)

27% off

Hobbyco

Passing Contact Switch White

(1)

Automates two trains on a continuous loop with passing section for seamless operation
Configurable departure delay allows for flexible scheduling and control
Operates points and isolated track sections to ensure smooth alternating train movement
Supports infrared train detection sensors for reliable train identification
Manual push button release provides override capability for troubleshooting or special cases

Summarized by Shop

The BLOCKsignalling L1-DC is an automatic DC model railway passing loop controller designed to operate two trains around a continuous loop with a passing section. When one train arrives at the passing loop, the controller automatically holds it while switching the points and dispatching the other train after a configurable delay.
Two inf

Power Supply: 12V DC
Compatible Train Detection: Two infrared sensors
Track Requirement: Requires isolated track sections
Model Train Accessory Type: Controls
Skill Level: Intermediate

Summarized by Shop

5.0

1 rating

5

4

3

2

1

Excellent module and helpful company.

T

Tim · June 19, 2026

Returns accepted within 30 days

Exclusions may apply. See full policy

BLOCKsignalling

4.9 (28)