Wireless outdoor dual-direction curtain motion detector designed to protect building perimeters and passages such as doors, windows, and gates. It features adjustable motion detection up to 30 m total (15 m per side) and communicates securely with the Ajax hub using the Jeweller protocol with a wireless range up to 1700 m. The detector includes anti-masking protection, pet immunity when properly configured, and a weather-resistant IP54 design with battery life up to 4 years.