Time Activated Relay 24-Channel 5-Amp SPDT with USB Interface

Taralist USB Configuration

USB Configuration

The time schedule must be configured using a computer and Base Station Software (a free download).  Once configured, the board will operate without a computer.  By choosing a USB version you will connect your computer to the board via a USB cable.  This is the easiest and most popular way to connect to the Taralist Board.  At any time, a computer may monitor the Taralist board, Trigger Events, Activate Relays, or Change schedules.  A computer can take over a Taralist or a Taralist can operate autonomously (without a computer).

Mounts as a COM Port

This Time Activated Relay connects to the USB port of your computer and will mount as a COM port on your PC.  USB Drivers may be needed and links can be found in the USB Quick Start Guide.  Windows 7, 8 & 10 users will automatically download and install the necessary drivers.

ZUSB Modules

This board is equipped with a ZUSB Module.  The ZUSB communications module adds USB communications to the board.  The ZUSB module is powered from the USB port of your computer and includes a 6' USB Cable.  The board itself will require 12 volts of power and can be hard wired or you can purchase a "wall wart" type transformer at checkout.

Take Manual Control of Taralist

At any time, a computer may monitor the Taralist Controller to read the status of the relays, activate relays, or change configuration settings using Base Station Software.  This USB version will allow access to the board as long as it is still connected to the USB port of your computer.  A computer can take over the Taralist or the Taralist can operate autonomously (without a computer).  The Taralist Configuration Utility is part of Base Station software and this is a free download.

Once Configured

Once the Taralist is configured, it will run through the list of events stored in its on board memory every second to look for a match with the current time.  If a match with the current time and a configured event is discovered, it will execute the event.

Controlling Relays

There are 2 possible ways to control the relays on a Taralist Series controller.

• A Relay can be Directly Controlled by a time schedule.
• This Relay can be controlled from a computer through a USB connection.  A computer can take control of any or all relays on a Taralist controller at any time.  Once taken over, the Taralist logic will not be able to switch a relay.  The computer MUST return control of the relay back to the Taralist Logic for standalone operation.

Who's Qualified to Use the Taralist Series?

Some computer skills required.  The Taralist Relays do not require programming, simply configure the device with the included Base Station Software.  While programming is not required and simple functions can be done rather easily with basic computer skills, complex events can be configured which will require some understanding and patience.

Induction Capacitors

Perhaps the most overlooked aspect of relay control is proper handling of inductive loads. Inductive loads can best be defined as anything with a magnetic coil, such as a motor, solenoid, or a transformer.  Controlling a inductive load using this relay controller requires the use of induction suppression capacitors.  The purpose of this capacitor is to absorb the high voltages generated by inductive loads, blocking them from the contacts of the relay.  Without this capacitor, the lifespan of the relay will be greatly reduced.  Induction can be so severe that it electrically interferes with the microprocessor logic of our controllers, causing relay banks to shut themselves down unexpectedly.  In the case of USB devices, customers may experience loss of communications until the device is reconnected to the USB port.  Capacitors that we offer are available at checkout, for more information view our Induction Suppression Video.

Base Station Taralist Setup

Base Station Software

Base Station software works by communicating with your controller to identify the model and provides the appropriate graphical user interface for setting the time schedule and uploading it to the board.  Base Station Software is used to configure and upload the time schedules to the Board and take manual control of the board to override the time schedule.
Download Base Station

Integrated Real Time Clock

The Taralist series have an integrated battery backed Real Time Clock with memory that allows users to control relays based on a time schedule.  Use your computer to setup the time schedule and store your schedule into the board.  Once stored, the Taralist does not require a computer, and will control the relay according to a schedule that can be as simple or as complex as your application requires.

Time Schedule Events

Events are scheduled times when a relay or group of relays are turned on or off.  They are defined by the user first by time: Year, Month, Day of Month, Day of week, Hour, Minute, and Second. You have the ability of switching relays on or off at very specific times!  Activate relays only when the day is Monday, activate relays when the day is Monday and the Year is 2020, activate relays when the day is Monday, the year is 2020 at 9:44:21 AM.  They are also defined by how they control the relays, whether they turn a relay or group of relays on or off. You can add up to 1000 Events to the list.

Program Multiple Schedules

Override functions are also supported.  So if the normal schedule activates a light during weekdays, but you don't want the light to come on during holidays, simply program your holiday schedule to prevent the light from activating according to your normal schedule.

Daylight Savings Time is also supported, and is FULLY CUSTOMIZEABLE.  As we all know, DST laws change periodically, but the Taralist series allow you to change the year and date of all DST events (we have programmed the US dates until 2030).

Save You Schedules

Taralist controllers allow you to build and save your time schedule as a file on your computer.  Different schedules can be configured for different times of the year, for instance one for Summer School and one for the full school year.  Upload the schedule you need for that part of the year.  For users with multiple boards saved schedules can also be used to store the time schedule into each controller easily without re configuring.

Clock Accuracy - Adjustable Time Compensation

Like most clocks, time drift is a reality and the Taralist controller will drift over time.  The Taralist clock has some special features to help keep the time accurate.  Time compensation functions are included that allow you to automatically adjust the clock forward or back (by up to 15 seconds) each day of the week.  For instance, you may find the Taralist keeps better time if it automatically advances the clock 1 second each day of the week.  Or you may find that you need to subtract 5 seconds from the clock 1 day per week.  Adjustable time compensation will help keep your clock accurate (though it is always a good idea to check on the clock periodically).

If your application requires your relay control to match a computer's time exactly we recommend using a computer controlled Relay and Relay Timer Software.  The software can be installed on a computer or server and match the time exactly.  We recommend this for school bells and shift change applications where matching a time clock is vital.  Select a Wired or Wireless Relay under Relay Control from the top menu to select a board then add the Relay Timer Software at checkout.

Manual Control

TaraList boards have some amazing abilities when it comes to making decisions on their own based on the events you configure, but you can take control of the relays at any time from a computer as long as communications are established between your computer and the Time Relay device.

The interface elements shown at right allow a computer to take over control of any relay and force the relays to a On or Off state.  You may also turn all relays on or off using the all relays on and all relays off buttons.  You can also read the status of relays by clicking the Read Relay 1-8 Status.  The Status of the relay will be shown to the right of the button.  The slider at the top of the screen allows you to select with bank of relays these commands are directed to. 

Power Loss Backup Buffer

The Midnight Backup Buffer is a special feature developed to help keep track of which relays should be activated in the event power is lost.  Every night at midnight, the current status of all relays is stored in non-volatile memory.  If power is lost, the Taralist will load the status of the relays from memory.  Next, the Taralist will calculate all events from midnight to the current time to determine if any relays need to be activated or deactivated.  Finally, the Taralist will refresh all relays and will be ready for normal operation.

Taralist Board Features

"Engineered for Reliability. Built to Scale."

Time Activated Relay Controllers (Taralist Series)

Taralist Time Activated Relay Controllers make scheduling easy. Each board includes an integrated real-time clock, so your relays can follow a precise schedule - day, hour, minute, second - without needing a computer connected 24/7.
Once you create your schedule in Base Station Software and upload it to the board, you're done. The controller handles the rest automatically.

These boards are ideal for lighting control, security systems, HVAC, bells, timed access, automation sequences, and any project that needs relays triggered on a repeating schedule.

But! Keep this in mind:

• The onboard clock can drift over time. Most users won't notice, but if your application requires precise long-term accuracy (bells, synchronized events, access timing, etc.), this may not be ideal.
• You can correct drift manually, but it takes periodic maintenance.
• If you need perfect time accuracy, consider using Relay Timer Software with a ProXR board, which uses your PC-s system time.

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Add Relays as Your System Grows

Every Taralist controller includes an onboard XR Expansion Port, allowing you to add relay expansion boards at any time.

Start with the number of relays you need today and expand incrementally - up to 256 total relays - without replacing your controller or rewriting your software.

Expansion boards share the same schedule structure and can mix relay types and amperages to match evolving system requirements.

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SPDT Relay Installed

SPDT (Single Pole Double Throw) relays include three terminals: Common (COM), Normally Open (NO), and Normally Closed (NC)

• When the relay is off, COM is connected to NC.
• When the relay is energized, COM switches to NO.

Your load can be wired to either the NO or NC terminal depending on whether you want the device to turn on when the relay activates or when it releases. Examples of wiring methods can be found in the gray Relay Logic tab.

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2 Million+ Cycles

ProXR relays are rated for long service life - expect years of dependable operation and millions of mechanical cycles.
Every controller includes a 5-Year Warranty and 30-Day Money-Back Guarantee.

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Essential Power Requirements

Clean, regulated power is critical.
A stable 12VDC supply ensures both the relay coils and onboard firmware operate correctly. Unstable or noisy power can cause improper switching or communication issues.

We recommend the PWR12-US (120VAC → 12VDC @ 1.25A) or our international supply with interchangeable adapters.
Learn More

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RoHS Compliant & Lead-Free

All ProXR Lite controllers are built with RoHS-compliant components and lead-free solder.

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Shipping

All boards ship directly from our Missouri facility. Each unit is built and tested at the time of order - please allow 3 - 5 days for production. We ship primarily through UPS, but we're happy to use FedEx or DHL for international orders when you provide your account number. Questions? Call us at 800-960-4287 or email sales@relaypros.com.

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Induction Suppression

One of the most important parts of relay control - yet the most commonly overlooked - is inductive load protection.

Anything with a magnetic coil (motors, solenoids, transformers, etc.) generates high-voltage "kickback" when switched. Without a suppression capacitor, that spike can:

• Shorten relay lifespan
• Cause electrical noise that disrupts the microcontroller
• Trigger unexpected shutdowns
• Require power cycling to restore communication

Adding an induction suppression capacitor protects your relay contacts and keeps everything running smoothly. Capacitors are available at checkout, and our Induction Suppression Page has wiring diagrams and more details.

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Time Activated Relay Is Here!

Control relays with a time schedule and configure with Base Station software a free download.  Here's a lists of great features:

User Friendly Software
• Point & Click Interface - No Programming Knowledge Required
• Override Time Schedule When Computer is Connected to Board
• Read Status of Relays in Base Station

User Friendly Board Design
• Break-A-Way Tabs lets you decide the board's size
• Screw terminal or direct relay connections make connecting to the relays easy

Data Sheets & Quick Start Guides

Below are the Data Sheets Quick Start Guides for this board.  These are the guides that will help you communicate and configure this board.