Depends how you are planning to connect them together. Anyhow, I wouldn't do it. Each pir sensors switch has a maximum load rating and you can bet your boots that they will not have wasted money putting an overrated switch into these lights e.g. if the max wattage of the light is specified as say 100w, then I wouldn't expect it to be fitted with a switch capable of switching 200 or 300w.
Given that the pir's are providing the switched live to the lamp you could put multiple pirs in parallel with the switched live output being fed to multiple lamps but it means that each pir must independently be capable of switching the total load of all connected lamps. The diy sheds sell separate pir and they are all load rated, so work out your load and buy your pirs capable of switching your total load.
Thanks for the info. The lights stay at 30% brightness all the time so I suppose it is no big deal if they do not come on all at once. Doesn't seem worth the effort of buying additional PIR's
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local