Description CP Plus CP-HAS-D33-W – Wi-Fi Door & Window Sensor with Real-Time Smartphone Alerts Protect your home with the CP Plus CP-HAS-D33-W, a smart Wi-Fi-enabled door and window sensor designed for easy installation on windows and doors. Using IEEE 802.11 b/g/n Wi-Fi protocol on the 2.4GHz band, this sensor detects opening and closing within a 20-30mm range. The sensor instantly sends real-time alarm notifications to your smartphone, keeping you informed and enhancing your home security from anywhere. �� Key Features: �� Wi-Fi Protocol: IEEE 802.11 b/g/n (2.4GHz) �� Detection Distance: 20-30mm �� Real-Time Alarm Notifications to Smartphone �� Easy Installation on Windows & Doors Best For: Home Security Window and Door Monitoring Real-Time Alert Systems Smart Home Automation