Stops voltage spikes with the potential to do costly damage. Uses metal oxide varistors to suppress any voltage above 26V on pins 2,3 & 7.

VOICE APPLICATIONS ONLY
Highly effective Gas Arrester type voltage spike protection inline Male to Female RJ12 6P2C for voice phones &

Ferrite cores, split inside a plastic case that snaps closed over power and data cables. Suppress noise from / to many sources. eg.