PCB :-
| Item | Quantity | Farnell Order No. |
| PCB (Double-sided, copper-clad,
photo-resist coated, 233.4 x 160) |
1 | 141-303 |
| Relay (Dry Reed, SIL, 5V) | 24 | 176-577 |
| IC (SN74LS05N) | 4 | 373-503 |
| LED (Super Red, 3mm, built in resistor, 5V) | 12 | 595-305 |
| LED (Green, 3mm, built in resistor, 5V) | 12 | 595-329 |
| Capacitor 100nF (63/50V) | 4 | 750-920 |
| Capacitor 1mF (RSH, 10V) | 1 | 108-824 |
| 25-way D-connector (Female) | 1 | 150-822 |
| Shielded Ribbon Cable | 1 | 302-776 |
| 50-way Header | 1 | 587-400 |
| 4mm Socket | 1 | 149-546 |
| Tri-axial socket (Depends on current measuring device used) | 1 |