The 2GIG DW10E-345 eSeries Encrypted Thin Door/Window Contact Sensor 20-Pack (GG-DW10E345K2) offers a robust and efficient solution for securing multiple perimeter points in installations demanding high security. Each of the twenty sensors in this pack features eSeries encryption, providing tamper-resistant 345 MHz RF communication with compatible 2GIG eSeries panels (GC2e, GC3e, and Edge).With an ultra-thin ¾-inch width, these sensors fit discreetly on narrow door and window frames. They are fully supervised, reporting sensor health including battery status and signal integrity. Each sensor supports dual-zone monitoring via its internal magnetic reed switch and an external normally-closed (NC) dry contact input, offering enhanced flexibility. A cover tamper switch and rare-earth magnet ensure reliable detection and immediate alerts to any interference.Powered by a single long-life CR2032 lithium battery per sensor, each unit provides up to five years of operation. This 20-pack configuration simplifies bulk deployment and inventory management for installers, delivering professional-grade, ETL-listed intrusion protection.