Detailed Product Description

Video door phone Indoor phone V-4 Functions:
SMT with high integration and strong stability
Intercom, monitor, unlock, and call guard unit (optional)
11 melodies for ring selection
Password, avoid-disturbed, and alarm functions
4 or 7 alarm zones to connect with different detectors (for security indoor phone)
It may connect with doorbell, arm/disarm switch (for security indoor phone)
Arm or disarm the alarm zones by card or password (for security indoor phone)
Accepted to connect with extension indoor phones</ul>
Technical parameters:<ul>
Display: 4-inch CRT/4 or 5-inch TFT
Resolution: 400TVL
Backlight compensation: CCFL
Video input: 1Vp-p/75Ω
Audio S/N: ≥50dB
Audio distortion: ≤5%
Working current: ≤100mA
Environment temperature: -10 to +55
Dimensions: 230 x 210 x 70mm
Installation: surface mount
Bracket hole distance: 60mm</ul>