1 Channel RS232 Relay Board

Single Channel RS232 Serial Relay Board

Features

Low cost 1 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

Three versions available:

	Model: S1-RLY-EXT - powered by an external wall transformer. (enclosure available for this model only, order P/N RLY-ENC-EXT below)
	Model: S1-RLY-INT - with an on board 115VAC 50/60Hz power transformer. (NO enclosure available).
	Model: S1-RLY-INT-2 with an on board 230VAC 50/ 60Hz power transformer. (NO enclosure available).

Relay testing software available for Windows to program and verify the operation of the relay board before writing your own software program. Please note: The relay board does not ship with software, see below to download the software or order the software on disk.

Longer 4-conductor modular cable assemblies are available if the supplied cable is too short for your application.

Instruction Manual:

1-2 Channel Relay Manual (180KB, 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.

Software Examples:
Visual Basic
Visual Basic for Applications

Single Channel RS232 Relay board

S1-RLY-INT (internal transformer shown)

Applications

	Industrial control applications
	Automatic test equipment (ATE)
	Process control systems
	Power switching applications

Model S1-RLY-EXT Includes:
1 Channel Relay board with 10 Amp power relay
300 mA 9VDC output wall transformer.
9-pin RS232 to modular cable adapter
7' Modular cable

Model S1-RLY-INT Includes:
1 Channel Relay board with 10 Amp power relay
300 mA 115VAC 50/60Hz on board power transformer
9-pin RS232 to modular cable adapter
7' Modular cable

Model S1-RLY-INT-2 :
Same as above model except 230VAC 50/60Hz on board power transformer.

See the support section for additional information.

Software:

Relay Testing Software
Download software here or order on disk below.

Additional relay control software is available to operate the relay boards.

Quantity discounts available on order page.

Click on the order button next to the price to add this item to your shopping cart.

Description	Part Number	Price
Single Channel Relay Board w/wall Transformer	S1-RLY-EXT	$44.95
Relay Board Enclosure (For above board only)	RLY-ENC-EXT	$11.18
Single Channel Relay Board w/on-board 115VAC 50/60Hz Transformer	S1-RLY-INT	$44.95
Single Channel Relay Board w/on-board 230VAC 50/60Hz Transformer	S1-RLY-INT-2	$45.95
Relay testing software on 2 - 1.44 disks	RTP-V104	$5.95

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