SD card DVR
Black housing 1 channel SD DVR Model: BD-300-black
2014-04-03This is BD-300 dvr comes with black housing. other functions are same as BD-300.
Cheap 1 channel DVR with PTZ function Model: BD-207
2014-04-03This is a very simple 1 channel DVR works with micro sd memory. And it support fixed PTZ function.PTZ need to set baud rate for 9600, address 02, PTZ agreement, DVR with camera PTZ must consistent so it will be automatically rotating.