Smiths motion sensor

[the_f_o_x]

hi there
I need some help/advice installing a smiths three wire motion sensor (brown,orange,blue/white stripe) to a flood light im not an electrician so dont know what i should connect these three wires to.

any help will be very appreciated

Thanks alot nick

 

[Marvo]

Hi Nick. Doesn't the sensor come with a wiring diagram of some sort? What are you using the motion sensor for ie are you adding it to an existing circuit or is it part of a new addtion?

 

[the_f_o_x]

No sorry no wiring diagram. the sensor is second hand quite old ive had them in storage for about 3 years and they werent new then. I dont even know if they work thats why i want to connect it up to test it.

i would like to add this sensor to the exsisting circuit of the flood light that i have had for years so i can have power running to it at all times but will only light up with movent is sensed

 

[Sintra]

Have you got the model number of the unit as there is a very good chance I have a pdf instruction book for it.

 

[the_f_o_x]

it has no model/ serial numbers on the sensor or the mounting bracket just the word smiths written on the front of the sensor

 

[HandySparks]

I think Smiths used to do a system where the sensors were extra low voltage (12v?) and controlled the lighting via a processor module of some sort.

It's the wire colours that make me think that you might have one of these. If so, and you connect it to a mains light, it will go bang.

If you post up a pic or two (especially of any terminals) I might be able to tell.

 

[the_f_o_x]

 

[Sintra]

Tbh mate I would just chuck that and buy a new one for the sake of a tenner

 

[the_f_o_x]

Fair enough i was only going to use it for the fact that it was there , taking up space i have a about 3 or 4 of them that was the worst condition one but if you cant connect them without additional parts i will just bin the lot and not bother.

Thanks for all your help and advice

 

[HandySparks]

If you want a recommendation for a reliable PIR sensor for lighting:

Spectra - 200 deg PIR Sensor 1kW Load - Black

I've fitted loads of these and not had one failure (that I know of). Good wide angle sensing as well.