1. Appearance: lens circuit board without deformation, clean no dirt, no false welding, solder spot, bright, each mark symbol should be clearly visible, the focal length is clear; 2. Structure size: 38mm×55mm , PCB board thickness: 1.6 mm. 2.1 Circuit board dimensions should be 38mmX35mm surface device height should be less than 4mm. 2.2 Slot with PCB aperture of 2.5*3.3mm (four positioning holes). 2.3 The height of the lens from the front of the PCB is 22mm±0.2mm. 3. Environmental and electrical parameters. 3.1 Temperature: -20℃~ +60℃, 3.2 Working voltage: DC-12V (9-18V). 3.3 Working current: ≤30mA. 3.4 Video interface output impedance force should be 75Ω(1Vp-p, 75Ω); 3.5 The standard color palette shall be distinguished on the camera under conditions of illumination greater than 0.2LUX, and the color of the monitor image shall be consistent with the color palette. 3.6 The horizontal resolution of the camera is 600TVL (collectively referred to in the market).

Imaging device	1/4
System standard	PAL/NTSC
Effective pixel	VGA640(H) x 480(V)
Sync mode	internal sync
Horizontal resolution	700TVL
Signal-to-noise ratio	>48dB
Minimum illumination	0.1LUX
Backlight compensation	Automatic
Electronic shutter	1/50Sec-12.5uSec
White balance	Automatic
Gamma correction	> 0.45
Video output	1.0Vp-p 75ohm
Power required	DC9-18V
Current consumption	45mA
Fitted lens	3.6mm 940
Lens horizontal Angle	50°

 1. The detection camera should meet the requirements of Article 1.1; 2. Use vernier calipers to measure the shape, positioning hole, lens height and others of the camera, which should meet the requirements of 1.2.1 in 1.2; 3. The camera is connected to the display module and the display for detection, and the image shall not be distorted and other image distortion; 4. When the camera is working, the oscilloscope is used to measure the video signal video output amplitude test: 0.8~1.2VP-P/75Ω; 5. Connect the cable between the camera and the display, place the standard color card 0.8 meters in front of the camera, and the image on the observation monitor should be consistent with the real scene; 6. High and low temperature test: the temperature is 60℃ for 12h, the power is added to work normally, the temperature is negative 20℃ for 12h, the power test can work normally; 7. The 3.6mm camera lens is used to test 50°, and there should be no dark Angle around the image; 8. Stability test, continuous aging for 24 hours, there should be no failure; 9. Camera minimum illuminance inspection, camera minimum illuminance 0.1LUX.(no LED light).3.1 Vernier caliper with an accuracy of ±0.02㎜. 3.2 24 color standard color card, gray comprehensive test chart. 3.3 regulated power supply for display module camera, 14 inch color monitor.Q1. What communication technology does the Camera module visual doorbell use to connect with indoor displays? A: The Camera module visual doorbell from SKYNEX may use wired or wireless communication technologies, such as Wi-Fi or wired connections, to connect with indoor displays. Q2. How does the night vision feature work in SKYNEX's Camera module visual doorbell? A: The night vision feature in SKYNEX's Camera module visual doorbell uses infrared (IR) LEDs to illuminate the area in front of the camera, allowing clear visibility even in low-light or dark conditions. Q3. Can multiple indoor displays be connected to one Camera module visual doorbell? A: Yes, multiple indoor displays can be connected to one Camera module visual doorbell, enabling convenient access to the video feed from different locations within the building. Q4. Are SKYNEX's Camera module visual doorbells weatherproof? A: Yes, SKYNEX's Camera module visual doorbells are designed to be weatherproof, ensuring their durability and functionality even in outdoor conditions. Q5. What is the viewing angle of the camera in SKYNEX's Camera module visual doorbell? A: The viewing angle of the camera in SKYNEX's Camera module visual doorbell may vary based on the model, but it typically offers a wide-angle view to capture a broader area.