8-Channel RS232 Serial Relay Controller Isolated IO Board 8-Channel RS232 Serial Relay Controller Isolated IO Board Quasar Electronics General purpose RS232 serial port IO controller board featuring 8 relay outputs and 4 opto-isolated inputs for use in a wide variety of control and sensing applications including load switching, external switch input sensing, contact closure and external... Electronics > Circuit Components > Printed Circuit Boards > Development Boards quasar_diy_k108 3108KT 89.95 Quasar Electronics Limited https://www.quasarelectronics.co.uk/Item/3108-8-channel-serial-relay-controller-isolated-io-board
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8-Channel RS232 Serial Relay Controller Isolated IO Board

AS3108 - 8-Channel RS232 Serial Relay Controller Isolated IO Board
Ability Level 3: IntermediateProduct Formats Available:
Pre-Assembled Module (AS)

General purpose RS232 serial port IO controller board with 8 relay outputs and 4 opto-isolated inputs for use in a wide variety of control and sensing applications including load switching, external switch input sensing, contact closure and external voltage sensing.

The eight relay channels provide output control and are independent of the digital input channels giving you the flexibility to setup the linkage any way you choose in the control software.

The 3108 hardware is not programmable and has no memory. The hardware acts in response to commands sent to it by RS232 serial interface (e.g. turning on some relays and polling the status of inputs). After acting on an instruction, the board will remain in that state until a new command is received (even if the comms connection is broken and re-established).

Features
  • Eight independent relay outputs (can be increased to 16 if you use two 3108 units and our upgrade kit Order Code 3108U)
  • Relay outputs are capable of switching resistive loads up to 48Vac/28Vdc @ 5 amps max. *
  • Four 5-24Vdc opto-isolated digital inputs
  • Detachable screw terminal blocks for relay and input connections
  • High quality UL94 rated ABS enclosure with printed front and rear facia panels
  • Simple ASCII text based serial protocol using HyperTerminal or similar comms software
  • Free Windows 3.1 to 10 compatible software (details below)
  • Can be used with the optional USB to Serial Cable: PCUSB6
Applications
  • Process control
  • Access control
  • System control

* The relays are rated to switch up to 240Vac mains voltage but the exposed screw terminal block heads would need to be placed inside a suitable enclosure to prevent exposure to hazardous voltages.

Specifications
PowerRegulated 12Vdc (Order Code 660.446UK is suitable)
Current Consumption400mA max (50mA standby plus ~30mA per active relay)
Outputs8 x SPDT Relays
Maximum Output
Load (Resistive)
Up to 48Vac* or 28Vdc @ 5 Amps max. per relay (Relay Datasheet)
Output ConnectionsNO, NC, C (Relay FAQ)
Inputs4 x 5-24Vdc opto-isolated digital inputs
Computer InterfaceStandard RS232 DB9 (M-F) Serial port (optional PCUSB6 for USB connection)
EnclosureABS UL94 rated, 140W x 110D x 35H mm
Overall Dimensions~ 140W x 140D x 35H mm
ConnectionsPower: 5.5 x 2.5mm DC socket
Relays: 8 x 3-way pluggable screw terminal blocks
Inputs: 4 x 2-way pluggable screw terminal blocks
Computer: Male DB9 connector
Product FormatPRE-ASSEMBLED Electronic Module (AS) Product Formats Info
DocumentationUser Manual
SoftwareWindows Software Interface
Free Terminal Program
Item Number:
Quasar AS3108v4
Buy 1-4:
£74.96 +VAT, £89.95 Inc Each
Buy 5-19:
£63.71 +VAT, £76.45 Inc Each
Buy 20+:
£59.97 +VAT, £71.96 Inc Each
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