The DVR keyboard can be used simultaneously with the DVR mainframe and built-in hard disk VCR to control matching terminal products, such as high/constant- speed dome cameras, decoders, etc. The electric outlet between the controlling keyboard and the receiving terminal is EIA/RS – 485, which enables the keyboard to control as many as 128 dome cameras or other terminals within a maximal communication range of 1.5 Km.
Posted by Q*****l on 5th Jul 2012
Good buy! Well packaged, good price, nice service.
Posted by M***n on 8th Jul 2011
Received controller today well with in the time said of 2 to 3 weeks. Got to me in 5 days. Easy to set-up. Very happy :-)
Posted by H**********o on 28th Mar 2011
Impeccable service, support by email works, fast delevery 13 days, regards
Posted by M*******n on 14th Jun 2010
Everything was ok: fast delivery, nice contact