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MOUNTING

Before mounting the module in the meter, make sure that a SIM card is 

installed in the SIM card slot. 
NOTE! Please note that the SIM card must be inserted correctly. If it 

is inserted upside down it can easily damage the SIM slot.
CMi6140 is mounted in the module slot of a Kamstrup Multical meter. Hold 
the device by the outer edges and gently press it into position
NOTE

• 

Electrostatic-sensitive devices. Please observe the  

necessary ESD protective measures when installing  

the device.

ANTENNA

CMi6140 is available with external antenna. The antenna is connected using 

an MCX connector.

NOTE

• 

The antenna should be mounted at least 0.5 meter away from the 

meter to avoid interference. 

 

POWER SUPPLY

The meter where CMi6140 is installed in must use any of 

Kamstrup 230V High Power 

Kamstrup 24V High Power 

Kamstrup IoT battery, D-cell 

Kamstrup IoT battery, C-cell

INTRODUCTION

CMi6140 is an integrated meter connectivity module mounted inside a 

Kamstrup MULTICAL 403/603/803 that deliver meter data to a receiving 

system via a NB-IoT network. For a complete description of the product, 

or for information in other languages, please visit the Elvaco AB website, 

https://www.elvaco.com.

MODULE SPECIFICATION

CMi6140

Integrated MCM for Kamstrup MULTICAL 403/603/803, NB-IoT

ACTIVATION

Upon delivery, CMi6140 has a standard configuration. If you would like 

to change configuration, please download the Elvaco OTC Application 

(One-Touch commissioning) for Android available in Google Play or for iOS 

available in App Store.

The Elvaco OTC connects to the module via NFC. 

By default, the product is set to passive mode, which means no 

messages will be transmitted from the device. There are two ways to 

activate the product:

1. 

By using the front buttons of the Kamstrup Multical meter. 

 -On Kamstrup Multical 403: press down both front buttons   

simultaneously until “CALL” is displayed on the meter display.  

-On Kamstrup Multical 603 and 803: press down both arrow  

 

buttons simultaneously until “CALL” is displayed on the meter  

 

display.

2. 

Via the Elvaco mobile application.  

Go to the Apply tab, set the Power mode to “Active”, push “Apply” 

and place the phone on the right side of the meter, next to the 

module. Make sure to hold the phone still until the phone vibrates. 

You can make sure that the module has joined the NB-IoT network correctly 

by checking the “connection” field in the Inspect tab of the OTC App.  The 

mobile phone should vibrate three times. This indicates that settings have 

successfully been applied. 

For more detailed infromation about activation and operation see Users 

Manual available on www.elvaco.se

NOTE

• 

Make sure to locate the NFC antenna on your phone. When you scan or 

write new configurations to the module, you should place the phone’s 

NFC antenna as close as possible to the NFC antenna of the module.

1. 

Antenna Connector (MCX female)

2. Meter Interface

3. Pulse Inputs

4. NFC Antenna

5. SIM (nano)

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