DSC WS4965 Tri-Zone Wireless Door and Window Contact is a versatile security sensor that combines three detection zones into a single compact device for enhanced coverage. Designed for residential or commercial systems, it supports standard doors and windows, overhead doors, and external contacts using reliable 433 MHz wireless technology.

• Three zones in one device, each with an individual serial number for flexible system configuration

• Integrated reed switch with magnet plus tilt mode for overhead or garage doors

• Supports two normally closed external contact inputs for added sensors

• Long-life lithium battery included with low-battery LED indicator and case tamper protection

• Reliable 433 MHz wireless performance with included backplate for easy installation

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