Following are 17 different types of sensors that home alarm systems use to detect an intruder:
Solar Outdoor Siren
Outdoor Wireless Acousto-optic Siren
Wireless indoor siren(with repeater)
Smart Socket
Wireless Keypad
Wireless door sensor
Wireless PIR Motion Detector
Wireless Pet-immunity PIR Detector
Wireless Vibration Detector
Wireless Waterlekage
Smoke and heat detector
Gas detector
Solar-powered Wireless
Active Multiple-beam
Solar-powered Wireless Active Multiple-beam Grating
SOLAR WIRELESS ACTIVE BEAM DETECTOR
Outdoor solar pet immunity PIR