Indoor & Outdoor Stand-Alone PIR Sensor - 180° IP44 Rated Motion Detector

Is it possible to wire in a 2nd remote, non-switched PIR into this unit so that when the 2nd unit detects motion it causes the switched unit to operate? Also is it possible to wire in a remote push button to set the lights going without walking past the PIR?
These units are stand alone units. You can make them operate in the manner required if you incorporate a number of external relays into the design. However we would suggest you look at master and slave units or units with infra-red remote control - search on-line for luxomat and call their technical department if you need help.

We recently had a rewire, and a new PIR was installed. Originally there was a double switch by the front door, one for hall lights, one we did a on-off-on-off to override the PIR and have the lights on continuously. Now we only have a single switch for the hall lights and no way of overriding the PIR. Is there a PIR with a switch to override it, I can't face more wiring. Pity I did not notice this at the time.
Oh dear you have our sympathy. I guess you want to be able to bypass the motion detection so you can manually switch the lights on for a period of time? If you have no switch to interrupt the supply to the PIR we`ll need to find a way of changing the mode without switching off the power at the consumer unit. A RF operated in-line switch is one option (although involves a degree of aggravation) perhaps there is a PIR unit out there with this built in. We will check with some of the more technically advanced products and let you know.

Can this item control 2 wall lamps? Do you offer something similar with remote control so I can turn my exterior lamps on & off on top of the PIR as I do not want to run cables for an actual override wall mounted switch?
Our remote PIR sensors can switch several lights with a maximum combined load of 1300 watts. We do not have a combined PIR with remote control override (and are not aware of any product that offers this facility). A Heath Robinson design would use a radio transmitter, receiver and a couple of relays - switching the power between two routes: PIR and override. Perhaps an electronics shop would be more help?

How do I wire the PIR to operate an outside light. Would the PIR be wired in between the mains and the light?
Exactly so (just think of them like a switch) plus these PIR`s are also fitted with the ability for loop-in loop-out wiring.