Features
Low cost 2 channel serial relay board with heavy duty 10 Amp 240VAC/28VDC SPDT power
relay, controlled through one of the PC RS232 serial ports.
 | ASCII commands to control relays. |
| Easy hook up using standard modular telephone
cable. |
| Any software language that can write to the PC
serial port can be used with this relay board NO special drivers
needed. |
| 4800-38400 baud (default 9600 baud) |
| LED Indicators for relays |
| 8 channel logic (TTL) input/output port |
| 2
channel opto-isolated input port |
Two versions available:
| Model:
S2-RLY-IO-EXT - powered by an external wall transformer. (enclosure
available for this model only, order
P/N RLY-ENC-EXT-IO
below) |
| Model: S2-RLY-IO-INT - with
an on board 115VAC 50/60Hz power transformer. (NO enclosure available). |
Input/Output Port:
Both
units have a non-isolated 8 channel TTL compatible (0-5VDC) input or
output port, individually selectable as an input or an
output.
Additionally both boards have a 2 channel
opto-isolated input port capable of accepting up to 24VDC directly to
the pins. 5000V isolation, 4uS typical response time. 4 position
terminal block connection, 16-26 AWG wire.
Longer
4-conductor modular cable assemblies
are available if the supplied cable is too short for your application.
Instruction
Manual:
1-2 Ch Relay W/IO Instruction
Manual (193KB, PDF)
Application
Notes:
Application
Note 115 (92K, PDF) - How to determine if our serial relay boards will operate with a
specific software or operating system.
Application
Note 156 (127K, PDF) - Board command information -- explains in
detail the structure of the board commands.
Application
Note 158 (172K, PDF) - Operation and wiring examples for the I/O
Ports and Opto-isolated Input Ports.
See the support
section for additional information.
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