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Power and Charging

tDynamo can be powered by one of two sources: USB or the built-in 
rechargeable battery. It can be charged directly with the USB-C cable or via 
the optional stand. MagTek recommends charging atleast every 6 months to 
maximize operation. Storage Temperature: 32°F to 113°F (0°C to 45°C)

Power On and OFF

ON: To power on the device when it is not docked, tap the pushbutton. 
OFF: To power off the device, press and hold the pushbutton for 5 to 10 
seconds. 

USB-C Connector Power

Power via USB-C connector provides continuous power and charges the 
battery. The device powers on automatically, and stays powered on.

Charging the Device Directly

Power via the rechargeable battery: we recommend manually powering the 
device down when not in active use. A full recharge cycle for a completely 
drained battery takes approximately 4.5 hours. 
To charge the device using a USB-C cable, connect it to a USB charger or to a 
USB host that provides at least 500mA @ 5V. 

Charging the Device via the Docking Stand “stand”

To charge the device using the stand, set the tDynamo in the stand making 
certain it is fully nested in and touches the charging contacts. Connect the 
stand’s USB cable to a host that provides at least 500mA @ 5V. 

Checking Battery Charge Level

To check the battery charge level, make sure the device is powered on, then 

briefly tap the pushbutton. 

The Status LEDs light to show the battery level as follows: 
1 LED: battery is at 50% 
2 LED: battery is between 50-70% 
3 LED: battery is between 70-90% 
4 LED: battery is above 90%

Connection via USB and Bluetooth

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 LE

End users need only set up a host with appropriate software, configure the 

software, and connect the device to the host. tDynamo can connect to a host 
via a variety of connections. 

How to Connect tDynamo via USB-C Connector

1.  Power on the host.
2. 

Install the host software. It should be configured to connect with the 

tDynamo.

3.  Check that the tDynamo primary connection is USB-C.
4.  Connect the small end of the USB cable to the tDynamo USB-C 

connector.

5.  Connect the large end of the USB cable to the USB port on the host.

How to Connect tDynamo via Bluetooth LE

1.  Check that the tDynamo primary connection is Bluetooth LE.
2.  Close any other host connections to the tDynamo.
3.  Install the host software. 
4.  Power on the tDynamo and check for adequate battery charge.
5. 

Press the pushbutton for 2 seconds until the Blue LED flashes 3 times, 
then release the pushbutton to enter Pairing Mode. The LED flashes 

blue up to 2 minutes or until a host pairs or connects.

Continue to next steps based on your host device...

tDynamo Overview 

Point-of-service and point-of-sale needs to be fast, reliable, and secure. 
tDynamo delivers on all three and meets the growing demand from your 
customers to use the latest technology in the easiest-to-use form factor. 
tDynamo is a simple way to take a wide variety of payment methods, in a 
small, versatile device including magnetic stripe, chip card, and contactless.

Major Components Overview

Visual and Auditory Feedback

tDynamo General Status LED (LED 4) and Status LEDs 3, 2, and 1 provide 
feedback to the operator and cardholder about the internal state of the 
device:
• 

Green flashing: Powered on and ready, or indication to swipe a card.

• 

LEDs 4, 3, 2, 1 light in sequence: Device has read a contactless tap.

• 

All 4 LEDs on together: Device has just been powered on.

• 

LEDs 4, 3, 2, 1 light in combination: Battery check result after pressing 
pushbutton. 

• 

Steady green: Host has initiated a contactless EMV transaction.

• 

Three Blue flashes: After pressing the pushbutton for 2 seconds, the 

device will transition to Pairing Mode when the button is released.

• 

Short Blue Flashing: Flashing Blue (for pairing mode).

• 

Red LED: Operator is updating the firmware.

The tDynamo beeper provides feedback:
• 

One short beep on startup: Testing sound.

• 

One short beep after it has successfully read a contactless tap: 
Cardholder can safely remove the card or device from the contactless 
landing zone.

• 

Two short beeps: Occurs when a transaction is canceled.

• 

Two short beeps: Occurs when device is turned off.

CAUTION

MagTek recommends charging AT LEAST every 6 months to 

maximize operation.

Storage Temperature: 32°F to 113°F (0°C to 45°C) 

tDynamo (Gen I) - PN 21079821

Secure Card Reader Authenticator

Quick Installation Guide

Setup and Installation

MagTek  

®

 Inc., 1710 Apollo Court, Seal Beach CA 90740 | p 562-546-6400 | support 651-415-6800 | f 562-546-6301 | www.magtek.com

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