Screens can be as large as 10in, with 7in types the mainstream. Enhancements protection-wise include night vision compensation, picture and video capture, and remote control via a smartphone.

Two door stations

Catchview Electronics Co. Ltd
Catchview’s C V-VDK802C-2-3 model can support two door stations and is designed for surface or flush mounting. The 15VDC stainless steel door stations adopt a 1.4in CCD or CMOS IR camera with a minimum 0.5 lux illumination. Composite video output is 1Vp-p 75ohm. The 7in TFT LCD has a resolution of 480x234 pixels. Operating and standby power are ≤14 and ≤2W, respectively. The monitor runs on 100 to 240VAC at 50 to 60Hz.

Handset in color or b/w

Competition Co. Ltd
Competition offers the model MT200(C) surface-mount handset. It has a 4in TFT LCD that comes in color and b/w options. The unit measures 198x243x79mm and has a white housing.

Photo memory option

Competition Co. Ltd
The MT270(C) model from Competition has a photo memory option that can take and store 100 or 400 pictures. The handset can also be used handsfree via its touch button design. The surface-mount unit has a 7in color TFT LCD. It measures 280x135x27mm and comes in black or white.

Cat 5 cable used

Xiamen Leelen Technology Co. Ltd
Xiamen Leelen’s model No. 10 outdoor station and model V-4 indoor monitor adopt a Cat 5 cable for labor and cost efficiency. The outdoor station has a vandal- and water-resistant panel and allows for easy programming of addresses. The indoor monitor does not require an external power supply. The units can be bundled with CCTV cameras while a touchscreen, card reader, PIN code access, picture memory and alarm are among the optional features.

Smartphone-paired

Zhuhai iSmart Digital Co. Ltd
Zhuhai iSmart’s model P1014IMKIT1 IP video doorphone uses Wi-Fi for remote monitoring, talk-back and unlocking via a paired smartphone. The unit has a 10.1in TFT LCD with a 4-channel display, and a CMOS camera with 600TVL. It can support two doorbell units and two cameras simultaneously. The password-protected model is expandable up to 32GB.

See even at night

Zhuhai iSmart Digital Co. Ltd
The model P1705LM+P0102DM, wired video doorphone from Zhuhai iSmart includes an outdoor unit with night vision and a 450TVL camera. The product is also resistant to extreme weather conditions and vandals. The indoor handset has a 7in color TFT LCD and touch buttons.

2 outdoor stations, 4 indoor monitors

Zhuhai Rongtai Electronics Co. Ltd
This video doorphone from Zhuhai Rongtai can support up to two outdoor stations and four indoor monitors with a maximum distance of 70m. The model PL270C4 outdoor unit, available in black or silver with an aluminum panel, allows for two-way communication with the indoor monitor. It has an adjustable camera and night vision. The model PL380C4S indoor monitor has picture capture and video recording functions. Calls to the other indoor monitors are supported, and volume, brightness, color and contrast are adjustable.