The Dahua ARD2251E-W2(868V) wireless motion sensor combines infrared and microwave detection. It supports pet immunity for pets up to 80 cm tall and weighing up to 40 kg, as well as visual alarm verification when a camera module is installed.
It monitors room temperature and communicates bidirectionally with the alarm system, using frequency hopping for stable communication. Cloud updates can also be performed remotely via the mobile app, while the dual backup system enables automatic recovery if an update fails.
- Detection type: Infrared and microwave
- Connection: Wireless
- Mounting: Wall-mounted
- Pet immunity: Up to 80 cm tall and 40 kg
- Visual alarm verification: Supported when a camera module is installed
- Temperature measurement: Ambient room temperature
- Communication: Bidirectional, with frequency hopping
- Updates: Via the cloud and remotely through the mobile app
- Update backup: Dual system with automatic recovery if an update fails
Specifications
- Detection Type
- Infrared, Microwave
- Connector
- Wireless
- Battery
- No
Additional Features
- Antimasking
- No
- Tamper
- No
- Curtain
- No
- Placement
- Wall
- Recessed
- No
- PET
- Yes
- Built-in Camera
- No
Important information
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.