The MK-1GD is an audio video door answering system complete with a fixed camera door station (MK-DH, MK-DV and MK-DVF respectively), an inside monitoring station (MK-1GD) and a power supply (PS-1820UL). Two additional interior stations may be added, either audio only (MK-2SD), audio/video (MK-1HD) or one of each. The video door stations feature a wide angle black & white CCD camera with built in infrared illumination for low light viewing, call-in button, and speaker/mic for communication.

Audio communication at the door station is hands free, and communication at the inside station is through the handset. The call button on the door station turns on the 4” CRT at the inside monitor, initiates audio monitoring from the door and activates a four-stroke chime. The interior stations also feature a normally open dry contact for door release and an extra dry contact for light or secondary door release activation. Additional door station features vary by model: The MK-DH is surface mount and features a gray ABS plastic housing and an adjustable viewing area. The MK-DV is surface mount and features a Zinc cast faceplate with a metal call button. The MKDVF is flush mount with a stainless steel faceplate and metal call button. One power supply (PS-1820UL) supplies power for an entire system.

The newly designed MK Series with enhanced features offers an excellent solution for almost every entry security application. And its expanded features include up to three room stations, room-to-room communication and wide angle or pan-tilt camera with anti-vandalism construction. It's stylish design, advanced functions and convenient features support today's standard of living.

Features:

• Advanced Function
  
  Room-to-room communications along with visual surveillance at door/gate utilizing PanTilt control feature. Infrared, CCD camera for low light applications and a built-in video output Video and audio turn on when door calls in. Activate door strike from inside station(s).
• Stylishness
  
  Durable construction with its stylish design is suitable for most home exteriors.
• High-durability
  
  Vandal-resistant video door station designed to withstand high-abuse operation. Available either in surface or flush mount models.
• Easy Adoption
  
  Expandable to three monitor stations to accommodate a variety of home styles. Simple 2-wire hook up.

Specifications
Power Source	18V DC, 0.8A. 0.04A standby. *Use PS-1820UL power supply.
Scanning Line	525 lines.
Image Viewing Area	2'1" vertical, 3'1" horizontal at 20" from camera.
Minimum Illumination	1 Lux at 20".
Monitor Type	4" Direct View Flat CRT
Wiring	2 conductor, 18AWG, non-shielded (Use Aiphone #841802.)
Distance	Video Door Station to Master Monitor: 650' with 18AWG Master Monitor to Farthest Sub: 245' with 18AWG Master Monitor to Power Supply: 33' with 18AWG

System Layout Example: