This Unit Has a Piercing 120 dB Siren, Self-Charging LiPo Battery Powers the Sump Alarm During Outages for up to 1 Week.This Sump Pump Monitor is Intended for Indoor and Clear Water Applications Only. It Features Built-in Test and Silence Capabilities. Ideal for Those Who Want to Forgo a Complicated Wi-Fi Setup, This Sump Pump Alarm Straps Directly to the Discharge Pipe with Included Mounting Accessories. Its Float Switch with 15 Ft. Cord Will Not Interfere with Sump Operation. It Comes Ready to Install with a Power Cord and Float Switch Bracket that Set up in Just a Few Minutes.This Sump Sump Alarm is a Simple and Effective Way to Get out in Front of Sump Pump Malfunctions.