LocoFi'ed Atlas Master Silver Series HO 10003393 Southern Pacific SP #1778 Alco S2 Diesel Switcher Locomotive equipped with LocoFi 3 (DULLHB).
 
Built by the American Locomotive Company (Alco) the low-hood S-2 was introduced in 1940 to replace Alco’s earlier high-hood switchers. The 1000 horsepower S-2 was a turbocharged version of the S-1. There were 1,502 S-2s sold to North American Railroads. The versatility of the S-2s was evidenced by their service on class 1 shortline and industrial railroads. Atlas’ version is back in service, with new tooling, as well as a sound-equipped version for modeler enjoyment.
 
Features Include:
Redesigned & retooled hood, cab & chassis
The first plastic HO-scale model of an S-2 Locomotive to include accurate body paneldetails
Option for horizontal or vertical radiator shutters
Fine scale handrails
Separately-applied grab irons, coupler cut levers, air hoses, piping, etc.
Redesigned truck frames with separately applied detail
Directional LED lighting (includes cab rear headlight)
Die-cast chassis for improved pulling performance
Chassis retooled for optional DCC/sound
5-pole skewed armature motor for reliable operation
Dual-flywheels for maximum performance at all speeds
Factory-equipped with AccuMate knuckle couplers
Exceptional painting and printing
 
Here's the link to the original product: https://archive.atlasrr.com/HOLoco/arc-hos2.htm
 
LocoFi'ed Series introduces the most popular and well-known locomotives and trains to modelers, now equipped with LocoFi™ modules to enable it to run on DC, DCC or deadrail layouts, with no additional wiring or equipment installation required. All you need is an Android / Amazon Fire device - cellphone or tablet (no Internet required) with LocoFi™ app installed, available for FREE on Google Playstore / Amazon Appstore. If you are new to LocoFi™, and would like to see if it is for you, then LocoFi'ed Series offers the perfect chance to try it out.
 
This is a one time opportunity to own a customized LocoFi'ed Atlas Master Silver Series HO 10003393 Southern Pacific SP #1778 Alco S2 Diesel Switcher Locomotive equipped with LocoFi 3 (DULLHB). Pre-installed LocoFi'ed Series are rare and limited in number, hand soldered with care and attention to detail, with highest level of craftsmanship and technique, in the USA.
 
The LocoFi module is pre-installed. Simply install the app, connect and run!
 
Please reach out if you have any questions.
 
Technical Specifications
Input Power Type: Clean (NOT pulsed) DC, DCC or battery - Yes, an old laptop adapter laying around is ideal
Input Voltage: 7V - 24V - Wide input voltage range
Current Rating: 1.5A (1A motor) - High amperage decoder
Motor Operating Voltage: Same as input voltage
WiFi Spectrum: b/g/n (2.4 GHz)
Smart Devices Supported: Android
Speaker with custom tuned enclosure included
Sound Scheme: Diesel; 8-bit 16kHz; .WAV; 3 channel polyphonic; stored on pluggable microSD to easily load custom sounds
Supported Sounds: Engine Startup, Idle, Shutdown, Horn and Bell
Lights: Front and Rear, LEDs, On / Off, 10mA max on each output; resistors onboard
Other: Onboard capacitor for typical dirty track issues
Supported OS: Android 5.0+, Fire 5+