The SA-1 is a surge arrestor designed to protect any intercom system from damage due to power surges and lightning strikes. It can be used on power input wires and station wires. The SA-1 will discharge up to 180V of current.
Helps to prevent intercom equipment from surge, drawing overvoltage away from the intercom unit
Used to protect power input wires to all phone DC powered systems, and to protect intercom circuits by arresting surge on the station wires
Discharges more than 180V of surging voltage
Easy to install - Just connect wires to screw terminals
One SA-1 surge arrestor protects the AC or DC power line to a system
Multiple SA-1 arrestors can be used on many systems