Bullet style security camerasDome and turret style security camerasFull size box style security camerasSecurity DVRsVideo door phonesDome and mini dome style security camerasMiscellaneous surveillance products, switches and quads, video amplifiers, baluns, tools and moreOrder a Wholesale Catalog of CCTV Products

ECL-RSD4:  Serial Data Distributor

The ECL-RSD4 and ECL-RSD8 provide a way to take a single input signal (in RS232 or RS485 format) and duplicate and distribute it across multiple outputs simultaneously. The ECL-RSD4 has 4 outputs, and the ECL-RSD8 has 8 outputs. The input signal can be RS232 or RS485. Output signals are RS485. This type of simultaneous transmission can be useful for pan/tilt/zoom cameras (PTZ), point of sale devices (POS) and access control equipment.


If you have more than 4 PTZ cameras then you will want to ask about the ECL-RSD8, which is a similar product with 8 outputs instead of 4. Aside from the number of outputs, specifications are essentially identical.

  • Model ECL-RSD4 - 4 outputs
  • Model ECL-RDS8 - 8 outputs
  • Input: 1 x RS232 or 2 X RS485
  • 3 inputs can be "stand by" status at the same time, but only one controller can be activated at once
  • RS232 D-type connector inputRS485 screw terminal input connectors Output: RS485 signals (x4 or x8 depending on model)
  • Screw terminal output connectors
  • Maximum range: 1200 meters using twisted pair cable
  • Cascade connection capable to other ECL-RSD4/RSD8 distributors if necessary
  • Simultaneous transmission on all output channels
  • 12VDC power supply included.