Powerful 120+ Db Siren Sounds When Any Activity Is Detected By Pir Movement Sensor; 120 Wide-Angle Detection; 2 Settings Chime Sound In Alert Mode & Siren In Arm Mode; Compatible With External Siren, Magnetic Sensor Or Shock Sensor; Easy To Use With Entry & Exit Delays; Passcode Protected; Low-Battery Indication; Includes Multidirectional Mount; Requires 3 Aa Batteries SKU: PESCUSW351KCH