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Step 3: Install the sending unit

The Wattcher shows your home´s total energy consumption in a beautiful way. 

Together with Wattcher Online it gives insight in your daily activities and helps 

you to save energy. 

Your Wattcher comes with the following components: 

Step 1: Determine your type of electricity meter

Electricity meters come in two types:

A electromechanical meter has a rotating metal disk.
A digital pulse meter has a blinking LED, or pulse light.
There are also LEDs with an infrared light, invisible to the human eye but visible to 

the Wattcher’s sensor.

Sensor

Measures your electricity 

use at the meter

Sending unit

Sends the information 

to the Wattcher

Wattcher

Displays your energy 

consumption

velcro tape

hook

2 AA batteries

quick manual 

- installation 

Electromechanical meter

with rotating metal disk

Digital pulse meter

with blinking LED

Step 2: Read your C-Value

The C-value is a 

number

 on your meter. On an electromechanical meter, it states the 

wheel’s turning speed. On a pulse meter, it is the blink frequency. Please follow the 

instructions below to read your meter’s C-value. You will need this in step 5.

     For Electromechanical meters:

The C-value should be written on your meter as 

C = 

...... 

, a = 

........

 

or as 

 

......

 r/kWh, 

.......

 tr/kWh 

or

 

........

 U/kWh

. Write down the C-value (for example 600).

Note: if you see a = ........ on your meter, multiply that number by 60 to obtain the 

correct C-value (e.g. a = 10 -> C-value = 10 x 60 = 600)

     For Pulse meters:

The C-value should be written on your meter as ....... 

imp/kWh

, ....... 

pulses/kWh, 

........ 

p/kWh 

or

 

........ 

Wh/imp

. Write down the C-value (for example 1000).

Note: if your see ..... Wh/imp, then divide 1000 by that number to get the correct 

C-value (e.g. 0,5 Wh/imp -> C- value = 1000 / 0,5 = 2000). If your meter denotes

imp/kVarh

 or has the addition 

R53 

or 

SO

, that value should not be used (it indicates 

the variance in usage). 

If you have any doubts or if more than 

one number is written on your meter, please 

check page 6 and 7 of the comprehensive manual to determine the correct C-value. 

You can download the comprehensive manual on www.wattcher.com/manuals

1.  Open the battery cover on the back. 
2.  Slide the switch to the correct position (see drawing).

Do you have a pulse meter?

Slide the switch to the right.

Electromechanical meter?

Slide the switch to the left.

3.  Place the batteries: check the correct polarity (+ and -).
4.  Attach the hook on the wall next to the electricity meter.
5.  Hang the sending unit on the hook.
6.  Insert the sensor’s cable into the sending unit.

 

Pay attention

WA1 new functions

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