Gold Member Since 2012
Audited Supplier
Shenzhen Ealink Technology Co., Ltd.

Video Door Phone, Interphone, Intercom manufacturer / supplier in China, offering 4.3" Video Door Phone Intercom Home Security Interphone, 7′′ Video Phone Door (M1707A), 7" Commax Video Door Phone with Touch Key (M2207B+D25AC) and so on.

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Supplier Homepage Product 4 wire video door phones Indoor monitors 4.3" Video Door Phone Intercom Home Security Interphone

4.3" Video Door Phone Intercom Home Security Interphone

Purchase Qty.:
1-499 500+
FOB Unit Price: US $49 US $38
Purchase Qty. (Pieces) FOB Unit Price
1-499 US $49
500+ US $38
Get Latest Price
Port: Shenzhen, China
Production Capacity: 100, 000 Sets/Month
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: M2804B
  • Type: Wired
  • Voice Service: With Voice Service
  • Certification: RoHS, CCC, FCC, UL, CE, ISO9001
  • Resolution: 480*272tvl
  • Effective Length: 100meters
  • Additional Monitors Quantity: up to 3
  • Image Capture: Yes
  • Memory: 2GB to 32GB
  • Transport Package: OEM/Gift Packing
  • Origin: Shenzhen, China
  • Night Vision: With Night Vision
  • Color: White / Black
  • Installation: Surface-Mounted
  • Screen: 4.3" Color Digital LCD
  • Connection: 4 Wires
  • Video Channels Qty: 2 Doorbells
  • Lock Control: Yes
  • External Memory Card: Micro SD Card
  • Trademark: EALINK / ODM / OEM
  • Specification: CE, FCC, RoHS
  • HS Code: 8517699000
Product Description


4.3" Digital LCD, Touch keys
Hand free design, perfect intercom with clear voice
4-wire connection
2 main functions
Simple DVR function with motion detection
Auto leaving message
Video/audio recording
Picture taking with internal flash or TF card
Multimedia function: photo frame, music playing
Brightness contrast and color adjustable
Alarm clock and calendar
Real-time monitoring to doorbell or CCTV camera
Make internal call to other monitors
Lock control
Support 2 door panels or 1 door panel and 1 CCTV camera.

  1. Main specification
1LCD4.3" digital LCD
2Resolution480 x272
3IntercomHands free, 25 chord ring tones. 3 volume options: high/normal/low. The set parameters will not store after power cut off.
4Wire connection4 wires (video/ power /ground /audio)
5Audio300mVp-p  (1KHz,300Ω)
6Audio distortion≤3%
7Frequency response400-3.5K
8Intercom distance60m(RVV4x0.5) 100m(RVV3*0.5+SYV75-3)
9video1Vp-p  75Ω(input)(NTSC,PALauto)
10ButtonsSensor buttons*7 + blue LED * 4 (light on all time)
12Support outdoor camera2 (5PIN*1,4PIN*1)
13Support CCTV1 (for door panel 2 port)
14Intercom between MonitorsYes (4 wire connection)
15Unlock waySignal output, not power output for unlock.
16Power switchSlide Switch (at the bottom of monitor)
17Working voltageDC13.5V 0.8A,
18Working consumption5W(MAX),0.3 W(standby)
19Working temperature0ºC to +50ºC
20Storage temperature -20ºC to +70ºC

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