TLR165_USB Time Activated Relay

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

TLR165_USB Taralist Relay Control
TLR165_USB Time Activated Relay Control
Use your computer to setup the time schedule and store your schedule into the TLR165_USB controller.  Once stored, the TLR165_USB does not require a computer, and will activate relays according to a schedule that can be as simple or as complex as your application requires.

Time Activated USB at a Glance

  • Time Activated Relay w/Integrated Real Time Clock
      - Control Relays based on Time Schedule
  • Accurate Machine-Manufactured Design
  • Onboard USB Interface Module
      - Plugs Directly into USB Port
  • Mounts as a Virtual COM Port on Computer
  • Battery Backed Clock in Case of Power Loss
  • Programmable Schedule
      - Supports Daylight Savings Time
  • Sync time with PC or Manually Set Time
  • Base Station Software
     - Point & Click Interface
     - Use to Configure Time Schedule
     - Read Status of Relays
     - Manually Trigger Relays
Control Relays with Time Schedule
Time Activated with USB Interface

The TLR165_USB is equipped with firmware built into the board that will allow a time schedule to trigger relays.   The TLR165_USB know what time and day it is and will trigger relays according to your time schedule.  Up to 1000 events can be in the schedule!

TLR165_USB The Ideal Choice
The TLR165_USB Taralist Relay uses a USB interface that connects directly to a USB port on your computer.  Once configured the computer is no longer needed and the board will operate on it's own!  Access to the board to make configuration changes or override current settings!  The computer is needed to set your time schedule and upload it to the board.  Making this the ideal choice for controlling relays using a time schedule!

Up To 1000 Events
The TLR165_USB can store up to one thousand events!  If your current time schedule software only allows you a limited amount of settings for things like school bells and shift changes there is more than enough with this controller!

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Time Controlled Relay
The TLR165_USB includes a USB interface
for easy configuration and controlling the relays.
Extremely Powerful, Very Reliable Time Activated Relay!


Here's Where to Order:

Ratings AC DC
Voltage 240 24
Time Activated Relay
16-Channel 5-Amp SPDT with USB Interface
Part#: TLR165_USB $391.00

Power Supply Available

PWR12 Power Supply
The PWR12 is regulated power supply providing clean power necessary for the performance of these boards
Power Supplies $24/ea

Induction Supression

Induction Capacitors
Add years to the lifespan of the relay by adding an Induction Capacitor to the line when switching inductive loads. 
Induction Suppression $1.99 - $4.89 ea
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Time Schedule Relay Control

Configure Schedule with a Computer
Once Configured the Computer is No Longer Needed!
Board Triggers Relay Based on Time Schedule You Configure

USB Configuration

The Tarlist controller's time schedule must be configured using a computer and the included Base Station Software.  Once configured, a Taralist will operate without a computer.  By choosing a USB version you will connect your computer to your controller 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 ProXR series controller connects to the USB port of your computer and will mount as a COM port on your PC.  USB Drivers will most likely be needed and can be found in the resources section to the right and will also be available in the Base Station Software.  Windows 7 & 8 users will automatically download and install the necessary drivers.

ZUSB ModulesUSB Relay ZUSB Module

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

Induction CapacitorPerhaps 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.

SPDT Relay Controller

SPDT RelayThis device has SPDT relays installed.  SPDT Single Pole Double Throw Relays have three connections - Common, Normally Open, and Normally Closed.  When the relay is off, the common is connected to the normally closed connection of the relay.  When the relay coil is energized, the Common swings over to the Normally Open Connection of the Relay.  You can wire the device you are switching to either the Normally Open or the Normally Closed position.  For more information on selecting the correct relay amperage for your application see Choosing a Proper Amperage.

Integrated Real Time Clock

The Taralist series Time Activated Relay Controllers are unlike any other relay timer in the world. 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 Taralist controller.  Once stored, the Taralist does not require a computer, and will activate relays according to a schedule that can be as simple or as complex as your application requires.

The Taralist can be configured with a new time schedule after installation using wireless communications to your computer  Optionally, the Taralist may be configured using the USB port of your computer (you may change or upgrade communication modules at any time).

Time Schedule Events & How They Work

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.  By having these options 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 999 Events to the list.

Time Schedule Graphic Event Configuration Page  Click for larger picture

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).

Taralist controllers allow you to build and save your time schedule as a file on your computer, you can comment your schedule and control which events are active and inactive.  We encourage you to keep your schedule file in a safe place.  Once you have perfected your file, you can store the time schedule into as many Taralist controllers as you could ever need.

Defining Time

Time Schedule Graphic Setting Controller's Time 
By default the Time Relay controller does not know what time it is so this must be defined. The only way of doing this is from the Configuration Utility. Once your controller is connected to the computer and the Configuration Utility is launched the first thing to do is tell the Time Relay Controller what time it is. You may do this manually or you can Sync the time with your PC. This is done using the window below in the Con-figuration utility. The user can do this by simply clicking the Sync Time with PC Time button or by filling in the Year, Month, Day, Week Day, Hour, Minute, Second parameters and then clicking the Set Time Manually button.

Clock Accuracy - Adjustable Time Compensation

Clock Accuracy is of paramount importance.  Like most clocks, time drift is a reality that must be considered.  The Taralist clock has some special features to help keep the time accurate.  We have included time compensation functions 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).

When the current time matches the time of the event stored in your controller, you can activate or deactivate a single relay, a group of relays, or all 256 relays.  You can also set the relays to Computer control or Taralist control (this is perfect for holiday override.  A computer may be used to activate/deactivate relays at any time.  The computer will override the time schedule.  The computer can also return control of the relays back to the Taralist controller, or the Taralist controller can be set to automatically take back control of relays at a specific time.

Computer Control

Time Relay Computer Control Time Relay Computer Control
The Time Relay series controllers have some amazing abilities when it comes to making decisions on their own based on the events you configure into them, 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.  You may attach up to 32 banks or 256 Relays.

Power Loss Backup Buffer

The Midnight Backup Buffer is a special feature we 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 Relay

We've looked at the interface and the configuration now let's take a look at the board design itself.  The Taralist series controllers are machine manufactured for a highly accurate and reliable design.  Fully tested before they leave the production facility each Taralist controller is ready to stand up to rigorous demands from heat, cold or vibration.  The best test of all is the numerous boards in the field from customers all over the world in all sorts of conditions.  Take it from us, these controllers will hold up!

Break-A-Way TabsBreak-A-Way Tabs for a Smaller Design

The Taralist relays have a great feature where space is a premium - Break-A-Way Tabs.  The Break-A-Way Tabs allow most boards to fit in an optional undrilled plastic enclosure.  Snap off the Break-A-Way Tabs and you have a controller with a smaller profile when you need to fit in a tight space. 

Add Relays as Your Needs Grow

The Taralist series controllers are expandable up to 256 total relays.  The controller is fitted with an XR Expansion Port where you can add expansion boards to this relay.  Expansion boards can be added until you reach 256 total relays.  The Expansion Boards get their logic from the main board and will require 12 VDC power.  Expansion boards do not need to be the same relay amperage as the main board or other expansion boards.

Compliance to ROHS StandardsRoHS Option

This board is led free and RoHS Compliant.  If your requirements are for RoHS compliant parts this board is manufactured with RoHS compliant led free parts and solder.

30-Day Warranty/Money Back Guarantee

Taralist series controllers are guaranteed against manufacturing and functionality defects for a full 30 days!  Not to mention a 30-day money back guarantee!  If for any reason you are not happy with a relay purchased from Relay Pros, simply return it within 30 days and we will give you your money back!  Controllers that are damaged by our customers will not of course be warranted under any circumstances. 

Millions of Relay Cycles

Taralist controllers are designed for long life, you should expect to get years of service from your controller and literally millions of cycles from the relay(s) onboard.  With a 30-day warranty and a money back guarantee you have nothing to loose!  Place your order now, while everything is in front of you.


The boards sold are brand new units shipped from our office conveniently located in Missouri.  These boards are completely tested before they are released for shipping  With so many boards on our site it is impossible to stock boards, please allow two to three days production time for your order to ship.  If you have any questions please feel free to call our office at 800-960-4287 or e-mail us at

Time Control Is Here!

Trigger relays with a sensor with and configure with included Base Station software.  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


Boot up time of a Taralist controller is less than 1 second. The CPU on the Taralist controller operates at 64 MHz and is capable of processing 2000 events in 17ms. Taralist controllers may be configured wirelessly or through the USB port using the NCD Configuration Utility. A computer may take control of a Taralist controller and control relays by sending only a few bytes of data (using Wireless or USB communications). The Taralist controller requires power at Midnight of each night for proper operation of the Backup buffer. A very small rechargeable Lithium battery is permanently soldered to the controller; the charge rate of this battery is programmable from the NCD Configuration utility. When connected to the USB port of your computer, the Taralist controller must have power to prevent excessive time drift. The Midnight Backup Buffer may be edited using the NCD Configuration Utility. Time schedule events cannot be processed without power, battery backup is used to keep time only.


This video is a basic introduction to the world of Computer Controlled Switching and Relays in general.
Also read our "Introduction to Computer Control" Article.


This video will show you what Induction is and how to use Capacitors to Suppress it.
Also read our Article on Induction Suppression.


This video will show you how to get a Quote from our site.


Learn how NCD Taralist Series Controllers Work


Learn how to setup your NCD Taralist Series Controller


Test of the range of our Wireless Communication Options


Test of the range of our IEEE 802.15.4 Wireless Communication Options


Test of the range of our XSC Wireless Communication Options

Time Activated Relay 16-Channel 5-Amp SPDT with USB Interface