Velleman VM109 Instructions page 9

All repairs should be executed by qualified technicians.
Avoid the installation of the module in locations with standing or running water or excessive humidity. Indoor use
only !
Do not attempt to disassemble the unit as it does not contain any parts that are to be serviced by the user. (Tampering voids warranty)
Handle the module gently and carefully. Dropping it can damage the circuit board and case.
Never exceed the protection limit values indicated in the specifications.
As safety requirement vary, please check with your local authorities.
No objects or liquids should be allowed to penetrate the housing.
Disconnect the module from the AC power before connecting new devices.
Wipe the device with a dry and clean cloth. Do not use detergents or other liquids that may damage the housing.
Keep the device away from children.
Facilitate the operation of the device by familiarising yourself with its adjustments and indications.
Velleman modules are not suitable for use or as part of life support systems, or systems that might create hazardous situations of kind.
Repair under warranty is only possible with date and proof of purchase.
WARNINGS
SAFETY INSTRUCTIONS
Safety and warning instructions
9