Description :
Dual Stream 1CH SD Card Mini CCTV DVR Video Recorder With RS485
Single-channel DVR with audio， video and RS485， dual-stream， loop recording， automatic cover， with motion detection function， card memory， it suitable for for home， supermarket， shops security surveillance use but tiny price.
Specification :

Color : Black
Resolution : 640*480
Max SD Card Support : 32GB
Power : 12V 1A Package Includes : 1 x SD Card Mini CCTV RS-485 DVR 1 x A Full Set Of Accessories 1 x English Use Manual (Comes with a mini adapter according to you country :) Details Pictures :