3074 - 8-Channel PC Controlled Relay Board
This
PC printer (parallel) port relay board provides independently programmable
real-time control for each of the eight onboard mains rated relays.
Relay outputs can be used to automatically turn On/Off lights, motors & other devices around the home, office, laboratory or factory. The software interface allows you to program and save an infinite number of On/Off sequences. Alternatively, you can write your own software with a DLL from http://www.logix4u.cjb.net/.
NB If this board is powered up and connected to the computer, all of the relays will momentarily turn on when the PC first boots up. If this is a problem, please look at our 8-Channel Serial Port Isolated IO Relay Controller instead.
- Can be used with any PC parallel port on a 286 upward (remember those?)
- Each channel has a mains rated relay output
- LED relay status indicator for each relay
- For a BOXED version of the project see Order Code 3165
- NB If this board is powered up and connected to the computer, all of the relays will momentarily turn on when the PC first boots up. If this is a problem, please look at our 8-Channel Serial Port Isolated IO Relay Controller instead.
| Technical Specifications | |
|---|---|
| Power | Regulated 12Vdc (Order Code PSU445 is suitable) |
| Current Consumption | 300mA max (40mA standby plus ~30mA per active relay) |
| Outputs | 8 x SPDT Relays |
| Output Load | 5 Amps @ 250Vac max. per relay (Relay Datasheet) |
| Relay Connections | C, NO, NC (Relay FAQ) |
| Computer Interface | Parallel port |
| Dimensions | 70 x 200 x 25 mm |
| Connections | Power: 5.5 x 2.5mm DC socket Relays: Screw terminal blocks Computer: Male DB25 connector |
| Product Format | Electronic Kit (KT
 )
or Assembled (AS)
more |
| Documentation |
 User
Manual |
| Software |
 Windows Software Interface |
Software Interface
Our
new Windows interface has greatly improved features and allows almost
limitless 24/7 programmability. Programming sequences can be saved to disk
for reuse. Compatible with Windows 3.1 to XP. Download the
New Windows Software here.
We also have a set of
DOS-based utilities that allow you to write batch files to control the
relay board to your requirements. A sample test program is provided. The
older version
Windows-based Program written especially for this project is also available.
A
Linux-based version is also available for download.
Options
- Can be used with our optional Parallel Input RF Data Link Transmitter (Order Code 3175) and Parallel Output RF Data Link Receiver (Order Code 3176)
Additional Items Required
| Product Code |
Description | Price each exc. VAT (GB Pounds £) |
INC. VAT each 1+ |
Quantity | |
|---|---|---|---|---|---|
| 1+ | 5+ | ||||
3074KT |
PC Controlled Relay Board Kit | £22.94 | £19.50 | GB£26.95 | |
| AS3074 | ASSEMBLED PC Controlled Relay Board | £27.19 | £23.11 | GB£31.95 | |
| CD3074 | 3074 Software CD-ROM (can also be downloaded FREE from our website!) | £0.85 | £0.72 | GB£1.00 | |
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