Security Lighting

Have just received a number of GJD Mini opal PIR's and in each box is a bag containing 4 plastic items. No where in the instructions does it refer to these parts as far as I can see. They do seem to fit in the hole in the back of the sensor where the tamper switch is. There are 3 similar part each with a different length. They may be to waterproof the device but it's not obvious. The fourth piece I've no idea where it's meant to go.

I was lookiat your Voltek Single Zone Control Unit - 1803. Would this allow me to run 5 security lights via parallel cabling into this unit and if one light activates then they would all activate at the same time? If not do you have such a set up that would so this? Also could youy advise on whether each light would need an individual PIR or could i install sensor(s) into the loop that would cause full activation of all the lights at once? Cheers Johno

1. How can I choose between the vast number of Floodlights available, across an extraordinary price range ? My preferences are speed of ignition, lower brightness, lower energy, smaller size, weatherproofness, longer life and allows connection to two PIRs. Any choice suggestions ? 2. How can I wire this Floodlight to two PIRs (one inside, one outside my front door) to ensure it lights before I tackle the front steps from either direction.

Hi I have just installed an emerald mk 3 and 3 opal xl sensors on one of the zones controlling the lights. Can someone please explain why 2 of the sensors work ok and turn the lights on but the other sensor doesnt turn the lights on but it is picking the movement as I have the audible tone on aswell. Should the tone work at night aswell as turning the lights on?? Thanks