Yellow Union Pacific freight train moving on railroad tracks under cloudy sky near green foliage.

Systems & Sensors

OEM Replacements for Alerters, Indicators & More

Control Systems and Sensors help improve locomotive performance, track key systems, and support safe, efficient rail operations. This category includes control modules, monitoring devices, transducers, relays, and sensors that provide accurate feedback, faster response, and better reliability in tough rail conditions. Built for retrofit and OEM use, Bohr Electronics' solutions help rail operators protect system integrity, reduce downtime, and keep locomotives running reliably.

Black redundant speed supply unit with multiple Ethernet ports and indicator LEDs for power and network status.

Bohr Built

Redundant Speed Supply

RSS

Bohrelectronics Ditchlight Controller with LED indicators and terminal connectors for rail industry applications.

Bohr Built

Ditch Light Controller

Gray metal electrical enclosure box with warning labels and latch on top, used for housing electronic components.

Apollolite Ditch Light Pulser

Quest

Square D Company electrical relay with black and silver components and multiple terminals for connections.

Cooling Fan Contactor

EMD

Blurred image of a camera with the word ELECTRONICS in red text overlay on black background

Head-of-Train Device

Quantum®

HOT/EOT Onboard Repeater (HOTD)

Quantum®

Black industrial controller panel with dynamic brake and power throttle levers and operational instructions.

Locomotive Controller

EMD

Dynamic Brake Controller

Desktop Controller Master

Black Quantum Engineering speed measurement device with digital red LED displays and toggle switches on a metal base.

QSI-200 Speed Indicator

Quantum®

Aeroquip branded SIS MTR analog speedometer measuring up to 90 MPH in a green and black metal box.

Speed Indicator

Wabtec

Black rectangular electronic transformer mounted on a green circuit board with metal clips and screws.

Sensor Panel

EMD

Close-up of an electronic circuit board with resistors, capacitors, connectors, and integrated circuits

HVM Panel

GE

Three large capacitors connected with white wires mounted on a red base with coils and terminals for electrical testing.

SPI Suppression Panel

GE

Blurrily visible camera with bold text 'ELECTRONICS' in red and white on black background.

Fan Controller Panel

GE

Orange crash hardened memory module with multiple Ethernet ports and LED indicators for status and data.

AFR / BFR / BRP Panel

GE

General Electric numeric keypad with function keys and LCD display panel in dark casing

Display Screen (DID)

GE

Electronic circuit board with resistors, wires, and connectors mounted on a red base plate with labeled points.

Traction Alternator Field Suppressor Panel (TAT)

GE