Image Sensor: CMOS
Lens: f=3.6mm, F=2.0, Fixed Iris
Infrared LED: 8pcs IR LED
Compress format:  M-JPEG
Frame rate: 30fps
Dual way audio: support

Image Sensor: CMOS
Lens: f=4.0mm, Fixed Iris
Infrared LED: 8pcs IR LED
Compress format: H.264
Storage mode: with SD card 
Dual way audio: support

Image Sensor: CMOS
Lens: f=3.6mm, F=2.0, Fixed Iris
Infrared LED: with 8pcs IR Leds, auto triggered in dark
Compress format: MPEG-4
Dual way audio: Support
Power: DC 5V 1.5A

Image Sensor:   CMOS
Lens: f=4.0mm,  Fixed Iris
Resolution: 720P(1280*720)
Compress format : H.264
Storage mode: SD card socket, support 32G Storage
Dual way audio: Support