ADSL filter and parafourdre, autonomous, powered by lithium battery (autonomy about 5 years). Installation at the head of the telephone line.
ADSL filter and standby arrester
ADSL filter to guarantee the operation of any type of telephone transmitter
Protecting your telephone transmitter at the end of the line so that it remains a priority
Designed to facilitate wiring even for an existing installation
Autonomy of 5 years thanks to a lithium pie (CR 123)