DaveJ

I am trying to find a user manual for a DVMR I acquired when purchasing a home. The only marking on the unit is a sticker on the bottom but providing no brand name. The model number from the sticker is as follows: 4 CH DVMR MODEL: XA-412N SN: 51151523 The system has 4 working exterior cameras with monitor. A photo of the unit is attached. If anyone can assist it would be greatly appreciated. Best, Dave