This 21 inch color surveillance system monitor has BNC video input and built in audio.  This CCTV monitor comes in a heavy duty black metal case and supports more than 420 lines of resolution.  This monitor also has a built in A/B two channel switch.

• Picture Tube:
• 21"/ 0.31 dot pitch
• Power Source:
• 90~260 VAC (Auto Sense)
• Power Consumption:
• 120 Watts
• Scanning System:
• NTSC / PAL Auto Switchable
• Input Signal:
• (A) Composite Video 0.5 ~ 1.0Vp-p Neg. Sync (IN 75 ƒ¶ ) (B)Y / C Signal Y : 1.0Vp-p W / Neg. Sync (IN 75 ƒ¶ ) C : 0.285Vp-p (IN 75 ƒ¶ ) R.G.B. Sync R.G.B : 0.7~1.0Vp-p Analogy (IN 75 ƒ¶(Optional) Sync : H+V 1.0~2.0 Vp-p Neg. (IN 75 ƒ¶ )(Optional)
• Band Width:
• 100Hz ~ 6.5MHz (-3dB)
• Linear Distortion:
• Horizontal / Vertical 10% (Max)
• Input Connector:
• CVBS-BNC. R.G.B.H+V-BNC. Y / C 4PIN DIN JACK
• Output Terminal:
• 75 ohm - high Impedance Switchable
• Audio Input Signal:
• 50~150m Vp-p at 1kƒ¶
• Audio Output Signal:
• 1.5 Watts (at 10% T.H.D)
• Speaker Impedance:
• 8ƒ¶
• Audio I / O Connector:
• RCA JACK
• External Controls:
• Contrast/Brightness/Color/Sharpness/Tint /Volume
• Operation Temperature:
• -10�B~ 50�Bc
• Dimensions WxHxD:
• 18.82" x16.53" x19.41" ( 478 x 420 x 493 )mm
• Net / Gross Weight:
• 23Kgs / 25.8Kgs (50.61lbs / 56.76lbs)