USB-RLY02-SN

£31.12
In stock
SKU
USB-RLY02-SN

Powered and Controlled from the USB bus.

Relays - 2 with optional integrated snubbers
Relay current - Up to 16Amp @24vdc or 250vac
Power - Powered from standard USB bus 
Control interface
- USB with a mini B connector

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Key Features

  • 2 relays
  • powered, and controled, by the usb port
  • simple control set

Overview

The USB-RLY02-SN provides two volt free contact relay outputs with a current rating of up to 16Amp each. The relays are SPCO (Single Pole Change Over) types. The normally open,  normally closed and common pins are all available on the screw terminals. 

The module is powered by the USB port meaning that no secondary power supply is needed to switch the relays, or power the module.

Snubber option

Optional integrated snubbers can be added to the board between the common and normally open poles. When inductive loads are to be used the snubbers suppress the switching spikes and relay arc associated with such loads.

Examples of inductive loads that need an RC snubber would be:

  • motors
  • solenoids
  • relays (where the coil is driven as a load from the first relay)

We have a simple guide here

Example Source Download
Java - A program that can be used to switch outputs Download .jar
C# - A program that can be used to switch outputs Download .exe
POSIX C - A command line utility to switch outputs Download  
Python 3 - A utility to switch outputs Download  
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