1.  PIR Motion detection offers you a better home security solution. There are motion alerts even if the stange visitor doesn't ring the doorbell.
2. When the visitor presses the call button, the doorbell will capture the visitor's image and save the call automatically.
3. Night vision LED light and 120° viewing angle enable you to identify the visitors and capture image in low-illumination environment, even at night.
4. It supports up to 500M long transmission distance in open area for video and voice communication.
5. No need to worry about poor Wi-Fi signal problem.
6. Two door cameras can be installed in front door and back door, and one door camera can come with two indoor units that can be 2.4'' handsets or 4.3'' monitors.
7. Real-time monitoring lets you never miss any visiting or delivery.
8. Tamper alarm and IP55 waterproof design ensures normal operation in any case.
9.  It can be powered by two C-size batteries or external power source.
10. With an optional wedge-shaped bracket, the doorbell can be installed in any corner.

Physical Property
CPU	N32926
MCU	nRF24LE1E
Flash	64Mbit
Button	OneMechanicalButton
Size	105x167x50mm
Color	Silver/Black
Material	ABS Plastics
Power	DC 12V/ C Battery*2
IP class	IP55
LED	6
Camera	VAG (640*480)
Camera Angle	120~135Degree
Audio Codec	PCMU
Video Codec	H.264
Network
Transmit Frequency Range	2.4GHz-2.4835GHz
SIP	Yes
Data Rate	2.0Mbps
ModulationType	GFSK
TransmittingDistance(in open area)	About 500m
PIR	2.5m*100°