Quantity   Component name
1 × 2.54mm pitch female pin headers
1 × 2.54mm pitch male pin headers
1 × Pimoroni Raspberry Pi VESA mount
1 × Raspberry Pi 2 or 3
6 × HC-SR501 PIR sensor for motion sensing in rooms
5 × Magnetic reed switches for doors and windows
1 × DHT11 or DHT22 thermometer for temp and humidity
1 × BMP085 barometer breakout
1 × ADS1015 or ADS1115 Analog to Digital converter
1 × MQ-135 air quality sendor
1 × (optional) MQ-2 combustible gas sensor
1 × (experimental and optional) MQ-7 CO sensor
1 × 5V Buzzer with light
1 × Raspberry Pi Camera
1 × (optional) IP camera capable of FTP upload
1 × 200ft (or so) 4 conductor alarm wire (or just CAT5)
1 × 5V 2A power supply
1 × Micro USB connector (for Pi Power)
1 × Raspberry Pi B+/2 prototyping board
1 × 2.54 pitch screw block terminals