LP Series Voice, Data and Signaling Circuit Surge. Protection General Product Specifications INDITES Low Voltage Line Protector series of signal, data and loop circuit surge protectors provide strong protection’in a compact:hard Wire package. Applications PARALLELED longitude protection of 4-20mA current loops, lama panel NAG, ‘BLE and IDC loops: and burglar ‘alarm panels. Models are available to protect pairs, LAWGIVER models can handle #14-810 AWG wiring connections.