Passive system

Often referred to an alarm system which lies dormant until disturbed by intrusion.

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Parabolic aluminised reflector (PAR) lamp
Parquet
Particle board
Passive system
Paste flux
Peach leaf curl
Pebble dash
Pent roof
Perennials
Pergola
Perlite
Phosphor
Phosphorous
Pilaster blocks
Pilot hole
PIR detector
Plank
Pirimicarb
Plate vibrator
Plinth panel
Plumb line
Pointing
Pollination
Polyurethane
Porous
Potash
Power factor (PF)
Press locking bolt
Proboscis
Profile gauge
Propagation
Propagator
Proprietary filler
Purlins
Purpose-made cylinder union
Push-fit joints
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