DAHUA Wireless External Triple-Tech Detector (DHI-ARD2251E-W2(868))

Wireless External Triple-Tech Detector

• 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.