Maintenance And Cleaning; General Information About Radio Operation - HomeMatic HmIP-WTH-1 Installation And Operating Manual

Maintenance and cleaning

• Insert the battery ensuring that the polarity is correct (see figure
7) and press and hold down the system button (D) for 4s at the
same time, until the LED will quickly start flashing orange (see
figure 8).
• Release the system button.
• Press and hold down the system button again for 4 seconds, until
the LED lights up green.
• Release the system button again to conclude the procedure.
The device will perform a restart.
11 Maintenance and cleaning
The device does not require you to carry out any maintenance other
than replacing the battery when necessary. Leave any maintenance or
repair to a specialist.
Clean the device using a soft, clean, dry and lint-free cloth. You may damp-
en the cloth a little with lukewarm water in order to remove more stubborn
marks. Do not use any detergents containing solvents, as they could cor-
rode the plastic housing and label.
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General information about radio operation

Radio transmission is performed on a non-exclusive transmission path,
which means that there is a possibility of interference occurring. Inter-
ference can also be caused by switching operations, electrical motors or
defective electrical devices.
The range of transmission within buildings can differ greatly from that
available in the open air. Besides the transmitting power and the recep-
tion characteristics of the receiver, environmental factors such as hu-
midity in the vicinity play an important role, as do on-site structural/
screening conditions.
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