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Bluetooth Adapter (EKA 202 & EKA 203) is a plug in type device for ERC and EETa range of controllers to 

provide bluetooth connectivity with companion mobile application 'KoolConnect'.
•  Bluetooth Low Energy 5.2
•  Simple Plug anvd Play module
•  Powered from controller
•  Data logging for 15 days
•  Real time clock with power back up option

Technical specifications:

Specifications

EKA 202

EKA 203

Input voltage

5 V DC / 12 V DC

5 V DC / 12 V DC

Max Current 

70 mA

76 mA

Bluetooth version

5.2

5.2

Bluetooth range (without any obstruction around)

10 m

10 m

Data storage duration 

15 days

15 days

RTC power back up

No power backup

36 hours (approx.)

Communication interface with controller

UART, One wire

UART, One wire

Operating temperature

-25 – +55 °C

-25 – +55 °C

Maximum humidity

<90% RH (Non-condensing)

<90% RH (Non-condensing)

Storage temperature

-40 – +70 °C

-40 – +70 °C

Ordering code

Bluetooth adapter

080N0022 (Single Pack)
080N0026 (I Pack)

080N0023 (Single Pack)
080N0027 (I Pack)

Interface cable

080N0329 (ERC 11x)   |   080N0327 (ERC21x)   |   080N0325 (EETa)

Supported Controllers

ERC11x, ERC21x (080G34xx series only) and EETa

Approvals

1)

CE, UL, FCC, ISED

1)

 For latest approval status and other local approvals, please check at danfoss.com or contact your local Danfoss representative.

Dimensions 

(units are in mm)

Procedure for adapter installation

Fig. 2: Top view

Fig. 3: Rear view

Danf

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s

80G8311

59.6

Sc

an

 to

 co

nn

ec

t

Danf

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80G8340

35

17.7

A.

 Bluetooth Adapter

B. 

QR code chip

C.

  TTL port for connection 

with controller

Danf

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80G8345

Scan 

to 

co

nne
ct

1.  Detach the QR code chip from the Bluetooth Adapter by 

breaking. The QR code chip is used for pairing with mobile 

application.

2.  Attach the QR code chip to the door or any clean part of the 

cabinet that can be easily accessed for the pairing procedure.

Danf

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s

80G831

5

Scan to connect

Danf

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s

80G8346

Scan

 to co

nnec

t

A

C

B

Danf

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s

80G831

5

Fig. 1: EKA 202/203

Bluetooth Adapter 

Type

 EKA 202

 & 

EKA 203

Installation guide

ENGLISH

© Danfoss | Climate Solutions | 2023.01

© Danfoss | Climate Solutions | 2023.01

AN40413688421601-000202 | 1

AN40413688421601-000202 | 2

Function

Description

Illustration

LED info

Power-up

Power up the controller connected with 

Bluetooth Adapter.

Bluetooth Adapter starts power up 

initialization (it gets power from connected 

controller).

Danf

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80G8341

Green

Blue

Red

Danf

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80G8342

Green

•  White – Blue – Red – Green 

LED blinking in sequence 

indicates power up 

initialization.

•  After few seconds, Green 

LED rapid flashes indicating 

controller detection is in 

progress.

Established 

communication 

with controller and 

broadcasting.

After power up initialization, the adapter 

establishes communication with connected 

controller and start broadcasting.

Danf

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80G8347

Green

•  Green LED slow flashes 

(1s/1s) 

Unsuccessful identification/communication 

with controller.

Danf

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80G8343

Red

•  Red LED rapid flashes.

Connection with 

mobile app and Real 

time clock (RTC) 

update

Search and connect broadcasting adapter 

using KoolConnect companion app. Click 

on "Set time" when mobile app shows alert 

message to synchronize the adapter time 

with mobile time.

1)

Danf

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80G8344

Blue

•  LED turns to constant Blue 

indicating Bluetooth is 

connected.

Power up sequence and connection with mobile application:

EU CONFORMITY NOTICE 

Hereby, Danfoss A/S declares that the radio equipment type (CRO) Bluetooth adapter is in compliance with Directive 2014/53/EU. 

The full text of the EU declaration of conformity is available at the following internet address: 

ID411846615416-0101

1)

 Note:

1. Ensure that the module is connected to the mobile app after final power up and installation to finalize the setup properly. If the 

module is not connected after final power up at customer's site, the module will log the data without the correct time stamp.

2. If the Bluetooth Adapter is changed from one controller model to another (ex: ERC112C to ERC112D or EETa 3W), all the logged 

data from previous controller are erased and start logging afresh from new controller. The data from previous controller is 

retained if one code no. is changed to another code no. within the same controller model.

Scan QR Code below for KoolConnect mobile app download, regulatory and other informations: 

Android version 8.0 or later

iOS 11 or later (Iphone 8 & above)

KoolConnect

Danf

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80G8313

Danf

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80G8314

Danf

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80G8317

 Warnings/note:

•  The installation of Bluetooth Adapter should be performed while 

the Cooler is switched off.

•  Ensure the Bluetooth Adapter is installed away from heating 

source, direct sunlight, dripping water, dusty environment.

•  Do not mount the adapter directly in food compartment in case 

of cold space installation.

5.  Connect the Bluetooth Adapter to communication port of 

controller using interface cable (

Fig. 7

)

 

–  TTL port in ERC21x and EETa

 

–  DI port in ERC11x

3.  Secure the Bluetooth Adapter in a convenient location using 

double sided tape (

Fig. 4-5

) or by screw mounting (

Fig. 6

)

4.  Power off the controller by switching off the main supply to 

the controller.

Fig. 4

Fig. 6

Fig. 5

Danf

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80G831

6

Fig. 7

Interface

cable

Bluetooth Adapter

Controller

•  Avoid any obstruction around the adapter that impacts 

Bluetooth communication.

•  Interface cable ordered separately for the respective controller 

to be used for connecting Bluetooth Adapter to Controller.

•  Ensure that cables are always strain relieved and tied up by 

other means to cabinet.

080R4219

AN40413688421601-000202

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