General description The Security Alarm Systems kit includes 1 receiver and 2 weatherproof PIR motion detectors, designed for yard, garage, or barn security. This wireless siren kit provides reliable alerts for ports and windows, ensuring safety against theft. Technical specifications Communication range: Up to 300m (outdoors without obstacles) Motion detection range: 5-8m Alarm volume: ≥100dB (within 5m) PIR detection angle: 45 degrees Protection class (PIR sensor): IP44 Power supply (receiver): 3 x 1.5V Type-C batteries or DC 6V adapter (not included) Power supply (PIR sensor): 3 x AAA batteries (not included) Installation Keep PIR sensors in a clear path to the receiver. Avoid placing sensors in windy locations to maintain detection accuracy. Do not mount the PIR sensor in direct sunlight or near metallic objects. For outdoor installation, choose a shady and sheltered spot to minimize temperature fluctuations. Usage Adjustable alarm volume with options for high beep, low beep, or