Justin SST751-RC Quick Start Manual Download Page 1

SST

TRANSFORMER QUICK START GUIDE: iOS / Android

COMPLETE CONTROL!

Congratulations! You have purchased a first in 

landscape lighting - the 

Justin JSST

 

Bluetooth LE 

controlled multi-circuit solid state transformer

. Your 

new transformer comes from the factory programmed 

for sunset to sunrise operation based on Pacific 

Standard Time. Wherever you are, follow these 

simple step-by-step instructions below to add any 

custom program for automatic control of your new 

lighting system.

DEVICE REQUIREMENTS

JSST

 requires an Apple or Android device that 

supports Bluetooth Low Energy (also called Bluetooth 

LE, BLE or Bluetooth 4.0). running iOS 7 or Android 

4.4 or newer.

Supported devices:

Apple:

 iPad (Air, Mini, 3rd & 4th gen), iPhone (6, 

6+, 5s, 5c, 5 & 4s), iPod touch (5th gen).

Android:

 You can find a list of supported Android 

devices here:

http://www.bluetooth.com/Pages/Bluetooth-

Smart-Devices-List.aspx

INSTALLING THE JSST IOS / 

ANDROID APP

Search the App Store (iOS) or Play Store (Android)

for “

Justin JSST

”. Install on mobile device (free).

INITIAL CONNECTION AND SETUP

Internal Overide Switch

 (see below) Must be 

set to “App”.

1. Make sure your 

JSST

 transformers and fixtures are 

properly mounted and fully wired (see MOUNTING 

INSTRUCTIONS, behind transformer front panel). 

Apply 120V input power to only one transformer in 

the installation (if multiple). Your lights may flash as 

the transformer initializes. Open the 

JSST

 

App

 on 

your device. When loading the App for the first time, 

make sure to answer ALLOW (prompt) to the question 

USE YOUR LOCATION? This will send and store the 

correct time to your transformer according to your 

device and location.

2. Stand close to the transformer and open your App. 

Via Bluetooth 4.0 technology, you should see one 

or more locations appear. Each signal strength bar 

represents one single or dual circuit transformer. Tap 

on the top location to connect. In rare cases, multiple 

taps may be required.

3. For iOS, if provided, tap “A” or “B” at the top 

of the screen. The circuit being set will highlight. For 

Android, tap the menu icon at upper right and select 

“A” or “B”. In order to easily identify fixture locations 

and transformers on a job, the circuit name may be 

changed in settings, along with the name of each 

transformer.

4. The connected transformer name (“

JSST

” from 

factory) will be displayed at the top of your screen. 

For 

iOS

 devices, tap on the 

Control

 tab at the bottom 

and tap 

ON

. For Android devices, tap the 

LIVE 

CONTROL

 tab at the top of your screen, then tap 

the right side of the Brightness slider. Your fixtures will 

light.

During initial connection to your transformer, if you 

answered “dual circuit” in the opening screen of the 

app, your fixtures will light according to the transformer 

circuit selected. When facing your transformer, A 

represents the left side terminal output, B the right side.

On one circuit transformers, select ‘Single Circuit’ in 

the opening screen of the app. Both pairs of output 

terminals are then controlled by the app. If ‘Single’ 

or ‘Dual’ was initially selected in error, the ‘Erase 

Existing Programming’ button at the bottom of the 

settings screen can be used to reset your transformer 

to factory defaults. Warning: Any saved  programing 

will be erased!

5. Tap on the 

Settings

 tab. Scroll down to 

Rename 

selected side

 or

 Rename transformer

 and tap on 

it. If desired, enter a new name for the location of 

the fixtures connected to this transformer circuit, e.g. 

“Front Yard”. Save the new name for iOS by tapping 

Done

. For Android, tap 

OK

.

7. Under 

OTHER SETTINGS

, choose your voltage 

Output Level

 as required, and 

Lamp Type

. Separate 

lamp types are offered due to varying dimming 

performance when using LED’s. When Halogen is 

selected for an LED string, unexpected dimming results 

may occur.

8. Turn the 

Use DST

 switch off or uncheck the box if 

you live in an area that does not observe Daylight 

Savings Time, such as Arizona or Hawaii.

Note: If a second circuit is provided in this transformer, 

select Side B within the app and repeat the above 

process. With more than one transformer on the 

job, the initial set-up process can be simplified by 

connecting 120V input to one transformer at a time.

LIVE CONTROL

You can control and check the function and brightness 

of your lights in real-time from the

 Live Control

 tab.

Brightness Lock

Normally when you disconnect or switch from a 

location, the lighting schedule for the disconnected 

location will run immediately. For example, if it is 

nighttime and you connect and turn the lights off and 

then disconnect, the lights should immediately turn on 

because they are programmed to be on at night. If 

you would rather the lights stay where you set them 

after you disconnect, use the 

Brightness Lock

 feature. 

You can keep the lights at the custom brightness you 

set for day or night for a period of time or until the 

next event (scheduled program and/or brightness 

change).

SETTINGS

You can change the on/off/dim times of your lights 

from the 

Settings

 tab. The 

BRIGHTNESS

 control for 

Lights On

 refers to the initial brightness of your lights 

when they first turn on.

Note

: Diming levels may vary if different lamp types 

are combined in the same circuit.

Darkness Periods

When 

These Settings Apply

 is set to 

Nightly 

time 

, your lights will turn on/off/dim at the same 

times every night of the week. You can also select 

different darkness periods (a period of darkness 

beginning at noon of one day and ending at noon 

of the following day). For example, when 

Tue/Wed

 is 

selected for 

These Settings Apply

, on/off/dim times 

you configure only apply to the Tue/Wed darkness 

period and other periods are unaffected. 

Exactly at 

Sunrise

 and 

Exactly at Sunset

 times automatically 

adjust according to the timezone of the last device 

connected. Be careful to correctly move the “AM” and 

“PM” scroll for each desired on/off/dim time.

Presets

After configuring your schedule settings the way you 

want, you can save them for later use by tapping 

the 

Save Settings to Preset 

button or 

Presets

 button. 

This will save your schedule settings (only on/off/

dim times/brightness and nothing else) to your iOS 

or Android device so you can load a copy of those 

settings to other locations later with the Load Preset 

button. When multiple circuits are set for identical 

ON/OFF times, it is normal for the ON/OFF function 

to vary slightly between circuits in a transformer, or 

among transformers on a job.

If your transformer becomes disconnected from 120V 

input power for any reason, a backup battery within 

the transformer control module will maintain your time 

and programmed settings. The battery will not need 

service during the life of the unit.

OVERVIEW

Use overview to test your settings as needed. It

is a sped up way to see how your lights will act

during each night period. The 

BRIGHTNESS

 bar is 

only an indicator. When satisfied with your entries, be 

sure to tap save to run your settings nightly.

INTERNAL OVERRIDE SWITCH

You will find a three position rocker switch inside the 

transformer cover next to the output terminals. It can be 

set according to the legend below. Your transformer 

comes from the factory in the APP position. On dual 

circuit transformers, the switch controls both circuits 

at once.

READ THIS FIRST

ALL ON

left position

ALL OFF

center position

APP

right position

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