Dahua PIR Outdoor Triple-Tech Detector ARD2251E-W2

Support anti-masking detection
Support moving detection to prevent someone move or detach device
Support the installation of camera modules to form PIR-Cam to implement video verification
Pet immunity: up to 80 cm, 40kg
Support environment temperature monitoring
Supports two-way communication and frequency hopping to make communication with alarm hub stable and reliable
Features cloud update. You can also remotely update the device on the mobile app
Offers a dual backup system, and uses auto recovery when an update fails