With incredible video quality， ease of use and powerful networking tools， Revo ultra is the very best that Revo has to offer. The Revo Ultra's superb video quality is based on IP technology. The RU42B4I-1T is a complete plug and play HD surveillance system with 4 CH 4K NVR， 1TB and 4x 5MP HD Indoor/outdoor Audio Capable Bullet Cameras. The Revo ultra NVR is powerful featuring state of the art H.265 Compression， up to 4K Recording and 4K video output. The H.265 Bullet Cameras feature massive 5 MP Starlight Sensors， 2.5 times the resolution of standard 1080p. The cameras are equipped with a built-in microphone for audio streaming and recording. The built-in Professional Grade OSRAM LEDs and IR anti reflection glass strongly illuminate the scene up to an unprecedented 100 in total darkness. The RULCB28-3 Bullet Camera features a 2.8 mm fixed lens that provides an 100° wide angle of view. The cameras are built for the outdoors capable of handling temperatures as hot as 140°F and as cold as -40°F. The polished look and intuitive feel of the Ultra's interface is a joy for everyday use whether you're using the NVR itself， the Mobile App， Computer Software or Browser.

4-channel 4K IP NVR with 4 RJ45 PoE ports

1 TB pre-installed HDD

5 MP fixed lens starlight bullet camera with built-in microphone (4)

1-channel VGA， 1-channel HDMI at up to 4K(3840x2160) resolution

H.265 compression guarantees that the camera will perform properly in areas with lower network speeds and record for longer than normal on the same size HDD

True WDR (Wide Dynamic Range) for clearer video in challenging lighting conditions

Supports easy firmware upgrade via cloud

100 CAT5e cable (4)

2-step smartphone view setup iPhone and Android