4 Channel Rs232 Relay Board

These boards are best if you want to operate any electrical equipment by pc.

4 channel rs232 relay board.

It can be used to control various appliances and equipment with large current. Kmtronic usb 4 channel relay board rs232 serial controlled pcb. Mix and match up to 256 devices in any combination. Best for home automation.

It has a standard interface that can be controlled directly by microcontroller. Welcome to the world of computer automation. The one you use will depend on whether you want the 5v signal to turn the switch on or turn the switch off. Previous price c 40 89 10 off.

Buy it now c 12 53 shipping. This is an intro of 4 channel rs 232 based relay board module from iknowvations. Or best offer c 65 95 shipping. Only 5 left in stock order soon.

4 channel rs 232 relay board. It is rs232 based card having 4 onboard relays for switching external devices. It is equipped with highcurrent relays that work under ac250v 10a or dc30v 10a. Kmtronic usb 8 channel relay board rs232 serial controlled microchip cdc 4 out of 5 stars 6 6 product ratings kmtronic usb 8 channel relay board rs232 serial controlled microchip cdc.

This is an intro of 4 channel rs 232 based relay board module from iknowvations. Noyito 12v usb control switch relay module serial port control relay control board serial port rs232 communication 4 0 out of 5 stars 1. Sainsmart usb eight channel relay board for automation 12 v 4 1 out of 5 stars 64. This is a low level 5v 4 channel relay interface board and each channel needs a 15 20ma driver current.

The 120 240v supply current enters the relay at the common c terminal in both configurations. Dc 12v 4 channel db9 rs232 relay board remote control uart serial port switch for car motor 8 5 x 4 7 x 1 8cm 14 39. A d sce 03 rs 232c interface with comparator relay. A d sw 03 rs 232c plus compatator relay output.

The 4 channel relay module has two different types of electrical contacts inside normally open no and normally closed nc. Top rated seller top rated seller.