Protech Sdi-77xl2-C Motion Sensor

Deliver reliable perimeter protection with the Protech SDI-77XL2-C motion sensor, a dual-technology outdoor PIR motion sensor engineered for low false alarms and dependable intrusion detection. Combining passive infrared and microwave sensing, the SDI-77XL2-C requires both technologies to trigger before an alarm—minimizing nuisance alerts from wildlife, shadows or weather while maintaining sensitive surveillance and monitoring coverage. With up to 90' of motion sensing distance and a pole-mount form factor, this sensor covers long stretches of fencing and perimeter zones with fewer devices, reducing installation time and total system cost. The unit runs on 20V DC for straightforward integration with existing security power supplies and control panels, and its rugged US-made construction delivers reliable operation in outdoor conditions. Ideal for perimeter security, commercial site monitoring, and critical infrastructure protection, the Protech SDI-77XL2-C integrates seamlessly into modern security and surveillance systems. Specify the SDI-77XL2-C for projects that demand accurate detection and low-maintenance perimeter monitoring—contact your distributor or add it to your next security system design.

• Dual-technology detection (PIR + microwave) to significantly reduce false alarms and improve intrusion accuracy
• Up to 90' motion sensing range to protect long perimeter runs with fewer devices
• Outdoor-rated pole-mount design for fast installation on fences, poles and perimeter posts
• Low-voltage 20V DC input for easy integration with common security power supplies and access control systems
• Rugged US-made construction for dependable performance and low maintenance in harsh outdoor environments