TopProducts Comparison
- Show All
- Show differences
- Back
RELAY MODULE 4R-D7 Modbus RTU


AHD, HD-CVI, HD-TVI, PAL VANDALPROOF CAMERA HAC-HDBW2241F-A-0280B-S2-DIP - 1080p 2.8 mm DAHUA

12.20 EUR
12.20 EUR
137.49 EUR
137.49 EUR
PTZ control:  RS-485 / UART TTL  ...  
Protocol:  Modbus RTU  ...  
Standard:  ...  AHD, HD-CVI, HD-TVI, PAL  
Sensor:  ...  Progressive Scan CMOS  
Transmission speed:  4800 / 9600 / 19200 b/s (default: 9600 b/s)  ...  
Number of inputs:  4 pcs  ...  
Matrix size:  ...  2.1 Mpx  
Number of relay outputs:  4 pcs  ...  
Relay maximal load:  10 A / 250 V AC ,
10 A / 30 V DC  		...  
Resolution:  ...  1920 x 1080  - 1080p ,
960 x 576  - 960H, PAL  
Output:  4 x NO/NC  ...  
Range of IR illumination:  ...  30 m  
IR illuminator power adjustment:  ...  Automatic  
Lens:  ...  2.8 mm  
Main features:  
  • LED indication
  • The control inputs protected with optocouplers, which allows the use of control signals with voltages in the range of 3.3 V DC ... 30 V DC
  • The UART interface input is adapted to the installation of gold-pins for signals with voltages adapted to the TTL level (3.3 V DC / 5 V DC)
  • Possibility to configure the device address (with saving the settings after a power failure) in the range of 1 - 255 (default address 255)
  • Possibility to set the delay of the relay operation (base unit: 0.1 s, value range: 0.1 s ... 6553.5 s)
  • Protection against reverse polarity of the input voltage  
    		• ...  
    View angle:  ...  
  • 109 ° (manufacturer data)
  • 101 ° (our tests result)  
    • S/N ratio:  ...  > 65 dB  
    Video output:  ...  AHD / HD-CVI / HD-TVI / PAL, 1 Vpp / 75 Ω - selectable by switch  
    Audio:  ...  Microphone built-in - HD-CVI only  
    Main features:  ...  
  • WDR - 130 dB - Wide Dynamic Range
  • 3D-DNR - Digital Noise Reduction
  • BLC/HLC - Back Light / High Light Compensation
  • ICR - Movable InfraRed filter
  • Day/night mode
  • Auto White Balance
  • AGC - Automatic Gain Control
  • Sharpness - sharper image outlines
  • Mirror - Mirror image
  • Privacy zones - max. 8  
    • OSD menu:  ...  OSD menu available via DAHUA recorder  
    Power supply:  7 V ... 24 V DC (power adapter not included)  12 V DC / 225 mA  
    Power consumption:  ...  ≤ 2.7 W  
    Housing:  ...  Dome, Metal  
    Color:  ...  White  
    Vandal-proof:  ...  IK10  
    "Index of Protection":  ...  IP67  
    Operation temp:  ...  -40 °C ... 60 °C  
    Weight:  0.092 kg  0.33 kg  
    Dimensions:  93  x 91  x 20 mm  Ø 106  x 51 mm  
    Manufacturer / Brand:  ...  DAHUA  
    Guarantee:  2 years  3 years