![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_134314-300x169.jpg)
Solenoid Twin PCB component side. Remove and file down any break off tabs remaining.
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_134516-300x169.jpg)
Insert and solder in the 4 x 330 ohm resistors (orange, orange Brown)
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_134810-300x169.jpg)
Insert the 2 x 100 ohm resistors (brown,black brown) and the 220 ohm (red,red brown) and solder in place
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_134935-300x169.jpg)
Insert and solder in the 4 x 10K ohm resistors (brown, black orange)
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_135340-300x169.jpg)
insert and solder in the 8 pin dil socket, ensure the cut out matches the ident on the PCB.
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_140015-300x169.jpg)
Insert and solder the two led’s and the 3 x 100nF ceramic capacitors. The LED’s flat side goes towards the square hole.
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_140335-300x169.jpg)
Insert and solder the two buttons and the 2 x 100uF electrolytic capacitors
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_140620-300x169.jpg)
Insert and solder the switch and the regulator (please note that on V2 boards the regulator ident is upsidedown.)
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_140950-300x169.jpg)
Cut off the leads on the two opto switches to 4mm
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_141216-300x169.jpg)
and solder onto the edge of the board, matching up the diode symbol to the PCB
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_141352-300x169.jpg)
Solder in the three 2.5mm headers, ensure they are inserted the correct way around.
![](https://extkits.co.uk/wp-content/uploads/2017/05/20170522_141535-300x169.jpg)
Solder in the two transistors as show,