Thieves' Worst Enemy. The world's most advanced and dependable siren for G5 systems. Its built-in battery allows this siren to keep on wailing even if the wires are cut! And its G5 Digital ComLink will detect wire tampering that thieves use to bypass other battery-backed sirens. Its smart charging system won't drain your car battery like other sirens of this type. It will even warn you if the internal battery charge is very low. No override keys are needed like other such sirens. Provides Personalized Siren Sounds even on Clifford G5 security systems lacking that feature (selecting from among 15 different sounds via CliffNet Wizard.)