Elvaco CMa10w Manual

a
CM
10
Indoor wireless M-Bus temperature and humidity sensor

IntroductIon

The CMa10w/CMa11w is a 1-way wireless M-Bus communicating
temperature and humidity sensor for indoor use.
For a complete description of the product or for information in Swedish,
visit the Elvaco AB website, www.elvaco.com.

overvIew

mountIng

When mounting the CMa10w/CMa11w, avoid rooms with a lot of
supplementary heat, such as kitchens or south facing rooms. Position
the sensor away from direct sunlight. Avoid placing on an external wall
or near an external door. Make sure that the sensor is not positioned
closer than 1 m from the nearest radiator and at least 1.5 m above the
floor.
The CMa10w/CMa11w can be mounted directly on the wall, or over a
mounting box. If the CMa10w/CMa11w is placed over a conduit pipe,
it is recommended to fill the pipe to prevent air flow which could affect
accuracy of the values.
Remove the rear cover to be able to press the installation button SW1
(4).
ImPortAnt
• Do not use mounting holes (6) as shown in overview.
• Turn the rear cover as shown in the overview.
• Do not mount the product inside a steel cabinet, which will
dramatically lower the possibilities to connect to a master.
• If the product should be demounted from the wall, use a
screwdriver to separate the product from the rear cover. The
screwdriver should be inserted carefully in the upper part of the
holes as shown in the figure.
wIreless m-bus
The product is delivered with the radio turned off. The radio must be
manually switched on during the installation procedure.
The product will not be activated until the installation procedure is
started.
All manuals and user guides at all-guides.com
/
11
w
1. Push-button (SW2) (CMa10w)
2. Display (CMa10w)
3. LED 1
4. Push-button (SW1)
5. Serial number (identification)
6. Do not use for mounting
w

InstAllAtIon

The product can be installed and enabled in two modes. Please advise
your project manager which operation mode is used in your project.
unencrypted mode: Meter data is sent unencrypted and the encryption
key is not needed to decrypt the data.
1. Press and hold button SW1 (4) for 6 seconds, until LED1 (3)
flashes quickly.
2. Release SW1 (4).
encrypted mode: Meter data is sent in encrypted mode and the
encryption key is needed to decrypt the data.
1. Press and hold button SW1 (4) for 13 seconds, until LED1 (1)
flashes slowly.
2. Release SW1 (4).
Release SW1 for
unencrypted mode
LED1 fast flash
6 s 5 s
* If the button is released in this mode, the cma10w/cma11w will return to
inactive mode. this also applies if the button is pressed down for longer than
25 seconds.
ImPortAnt
Make sure that the product is activated by pressing SW1 in normal
operation. If the product is activated, LED1 will flash shortly.

oPerAtIon

The product will automatically, after the installation procedure, send
T1 messages every 6th minute containing sensor data, such as
instantaneous temperature and humidity. The product will also send
product status information, containing battery status and other relevant
information.

confIgure usIng lcd dIsPlAy (cmA10w)

The display shows current sensor information when push button SW2
is used. The display is also used to change and view the CMa10w
configuration. The display is turned off in normal operation mode. End
users only have access to the Standard menu. The Setup menu can only
be entered using the push-button SW1 on the rear of the product.
Release SW1 for
encrypted mode
LED1 slow flash
2 s* 12 s