Twin PIR on 1 lighting circuit with cut off switch

[Andrew Hunter]

Thanks Andrew. My thought process was based on being able to manually control the lights when the PIR sensors are turned off. I've tried to expand on the user case below:

User case 1 - Automatic lights via PIR: The lights would work automatically when the PIR switch is on and the light switch is off. The PIR's would control the lighting as set, with the light switch always being off.

User case 2 - Manual lights via Switch: The PIR switch would be switched to off, isolating the live to PIR sensors. I would then have manual on/off control of the lights via the light switch.

Is your point that the L1 from the sensors being connected to the SL from the lights switch will cause the PIR sensors to work?

Hi, No the switched live onto the switched live of the passive will not effect the passive in any way other than making that terminal live when the passive is not activated. My point is that if you switch the light switch on and then walk into the area that the passive is servicing then walk out of the area and switch the light switch off the lights will stay on until the time has elapsed on the passive due to the fact the passive was activated when walking into that area.

On the flip side if you wire it your way you have an extra switch and the lights will come on when you switch the supply back on to the passive again until the passive timer times out not sure it is worth the hassle of another switch with potential to cause some confusion should the circuit need some fault finding on later on unless you want to use the area without the nuisance of the passive switching on when not required.