Automatic Infrared Sensor

After the door and window alarms, indoor motion detectors are a primary feature of good, effective home security system. Unfortunately, many people are leery of motion detectors. They either think they are “too” hi-tech and therefore not affordable, or they’ve had negative experiences with too many “false alarms” by accidental triggering.

The truth is, motion detectors are available based on a variety of technologies and covering a wide range of prices. These devices have also become much more dependable and efficient as technologies have advanced.

Here are the various kinds of indoor motion detectors available..

Infrared — Though magnetic sensors are the most common in home security systems (used for door and window alarms), infrared sensors are the most frequently used in motion detectors. These sensors are designed to detect radiated heat and are often referred to as PIR sensors, or passive infrared sensors. The fact that this particular technology is so cheap and reliable has made it standard choice among most security systems.

Microwave — Microwave sensors are able to detect movement by emitting microwave energy. Microwave energy does have its shortcomings. For instance, it is able to penetrate walls which allows it to detect motion in other rooms. The most frequent application of this type of sensor is in automatic doors as seen in many retail businesses. But, combined with other technologies (see below) it is still quite useful in home applications as well.

Dual — One of the frequent issues in indoor motion detectors is with the family pets. These sensors have to be able to distinguish between the movement of a family member and that of an animal in the house (say a cat or a dog). These dual sensors utilize microwave and infrared technologies and are able to ignore movements that should not trigger the alarm system.

Ultrasonic — These sensors can be one of two types. They can either emit high frequency sound (called an active sensor) or they can detect sounds (called a passive sensor). Being among the most sensitive motion detectors available they are also among the most costly. For that reason alone, they are not typically not found in home applications.

Shock — Typically these are not thought of as a motion detectors because they are not detecting the movement of people, but of air. More commonly known as glass break sensors, these actually detect the shock wave created when a window is broken and so they are often referred to as “glass break sensors”. These devices are sometimes called “sound” or “acoustic” sensors. Many times they are used as a redundant monitor for the magnetic sensors typically used for windows.

Though the best case scenario is to keep the potential home intruder out of your home, sometimes they do gain entrance. When that happens, it is critical to be alerted to any “unauthorized” movement in your home. Indoor motion detectors play a vital role in home security.

Automatic switch demo for HO layout using IR (Infrared) sensors and LEDs

NEW! Infrared safety sensors for automatic doors $19.99

2pcs Infrared IR Motion Sensor Automatic Light Switch Saving Energy AC 220V 60Hz $13.99

110V Infrared Chip Automatic Hands Free Sensor Faucet Tap Sink Electronic Touch $53.95

110V Infrared Chip Automatic Hands Free Sensor Faucet Tap Sink Electronic Touch $78.95

Concealed Automatic Urinal Flush Infrared Sensor $40.00

Touchless Automatic Infrared SENSOR Trash Can WHITE 14G $89.99

2pcs Infrared IR Motion Sensor Automatic Light Switch Saving Energy AC 220V 60Hz $7.99

Automatic Sensor Soap Cream Infrared Dispenser Handfree Bathroom $12.20

New Desk Wall Infrared Ray Automatic Sensor LED Light $12.47

New Desk Wall Infrared Ray Automatic Sensor LED Light $10.00

New Desk Wall Infrared Ray Automatic Sensor LED Light $14.38

New Desk Wall Infrared Ray Automatic Sensor LED Light $10.39

SENSOR TOUCHLESS INFRARED AUTOMATIC TRASH CAN 13 GALLON $69.99

SENSOR TOUCHLESS INFRARED AUTOMATIC TRASH CAN 13 GALLON $125.99

New Desk Wall Infrared Ray Automatic Sensor LED Light $12.51

New Desk Wall Infrared Ray Automatic Sensor LED Light $10.39

Infrared IR Motion Sensor Automatic Lighting Lamp Light Control Switch White $7.27

Automatic Sensor Infrared Touchless Soap Dispenser Auto $9.34

Infrared Automatic Smart Sensor Liquid Soap Dispenser $15.25

Recycle Trashcan 18 Gallon Lid Motion Sensor Automatic Infrared Touch Less Bin $129.99

110V Infrared Chip Automatic Hands Free Sensor Faucet Tap Sink Electronic Touch $53.95

INFRARED SENSOR AUTOMATIC TOUCHLESS TRASH CAN 13 GALLON $69.99

400ml Infrared Automatic Motion Handfree Sensor Soap Sanitizer Dispenser Chime $118.35

110V Infrared Chip Automatic Hands Free Sensor Faucet Tap Sink Electronic Touch $53.95

Ceiling Wall Infrared IR Automatic PIR Motion Sensor Switch light Lamp DC 12V $11.99

Infrared IR Motion Sensor Ceiling Wall Mount Automatic Light Lamp Switch DC 12V $11.95

New Save Energy IR Infrared Motion Sensor Pir Automatic Light Lamp Switch DC 12V $11.95

Ceiling Wall Mount Infrared Automatic PIR Motion Sensor Switch light Lamp 220V $12.95

Ceiling Wall Mount Infrared Automatic PIR Motion Sensor Switch light Lamp 220V $12.95

Ceiling Wall Infrared Automatic PIR Motion Sensor Switch light Lamp 220V 1000W $12.95

New Ceiling Wall Infrared IR Motion Sensor Automatic Light Lamp Pir Switch 110V $15.99

Wall Infrared Motion Sensor Automatic Light Lamp Bulb Holder Socket Switch 220V $12.95

Ceiling Wall Mount IR Infrared Motion Sensor Automatic Light Lamp Switch 220V $12.95

Infrared Auto Open Pet Bowl Dish Dog Cat feeder with Automatic Lid Sensor $22.99

IR Infrared Motion Sensor Automatic Light Lamp Pir Switch Save Energy 220V 1000W $25.99

Ceiling Wall Infrared IR Motion Sensor Automatic Light Lampe Pir Switch 110V New $29.99

IR Infrared Motion Sensor Automatic Light Lamp Pir Switch Save Energy 110V 220V $25.99

White Infrared IR Motion Sensor Ceiling Wall Automatic Light Lamp Switch DC 12V $23.99

Automatic Sensor Infrared Handfree Soap Cream Dispenser $10.74

New Wall Mount Motion Automatic Infrared Sensor Switch Energy Save $7.26

NST Nine Stars DZT-20-1R Infrared Touchless Automatic Motion Sensor Lid Open $49.98

NST Nine Stars DZT-2-18 Infrared Touchless Automatic Motion Sensor Lid Open $25.98

Nine Stars Trash Can/Recycler Infrared Touchless Automatic Motion Sensor Lid $102.98

NST Nine Stars DZT-27-1GY Infrared Touchless Automatic Motion Sensor Lid Open $49.98

NST Nine Stars DZT-8-2W Infrared Touchless Automatic Motion Sensor Lid Open $49.98

5x Wall Mount Motion Sensor Automatic Infrared Switch $28.02

220V Wall Mount Infrared IR Motion PIR Automatic Auto Sensor Switch For Lighting $6.99

iTOUCHLESS SENSOR TOUCH-FREE INFRARED AUTOMATIC STAINLESS TRASH CAN 13 GALLON $69.99

Infrared Automatic Motion Sensor Soap Dispenser W Chime $17.99

Automatic Sensor Infrared Handfree Soap Cream Dispenser $11.75

Automatic Sensor Infrared Handfree Soap Cream Dispenser $10.47

Automatic Sensor Infrared Handfree Soap Dispenser H938 $14.74

G1307 Bathroom Automatic Sensor Infrared Handfree Soap $12.75

220V Wall Mount Infrared Motion PIR Automatic Sensor Switch For Lighting Light $6.99

Universal Infrared Sensors for Automatic Doors $11.99

Infrared Sensor Automatic Soap Dispenser WF-039 White $20.00

Infrared Motion Sensor Automatic Lighting Light Switch $7.99

Infrared Motion Sensor Automatic Light Holder Switch $7.65

Infrared Motion Sensor Automatic Lighting Light Switch $8.83

Infrared Motion Sensor Automatic Lighting Light Switch $7.79

iTouchless Deodorizer Filtered Infrared Sensor Automatic Touchless Trash Can, 13 $99.99

Ambest Concealed Automatic Urinal Flush Infrared Sensor $40.00

Ambest Touch Free Automatic Infrared Sensor Sink $42.00

Ambest Touch Free Automatic Infrared Sensor Sink $37.00

E27 220V 5W 39 LED Flexible IR Infrared PIR Motion Sensor Automatic Lamp Light $11.99

Wireless 6 LED IR Bulb Infrared Sensor Light Lamp Motion Detector Automatic $0.99

Automatic Sensor Infrared Handfree Soap Dispenser H938 $12.99

Automatic Sensor Infrared Handfree Soap Dispenser H938 $4.87

NEW HANDS FREE INFRARED AUTOMATIC ELECTRONIC TAP IR SENSOR FAUCET 220V $92.99

NEW NST Nine Stars DZT 20 1R Infrared Touchless Automatic Motion Sensor Lid Open $52.74

NEW NST Nine Stars DZT 27 1GY Infrared Touchless Automatic Motion Sensor Lid Ope $49.43

NEW NST Nine Stars DZT 8 2W Infrared Touchless Automatic Motion Sensor Lid Open $48.18

NEW Nine Stars Trash CanRecycler Infrared Touchless Automatic Motion Sensor Lid $134.91

400ml Automatic infrared Sensor Smart Soap Cream Sanitizer Dispenser Touchless $99.99

Automatic Sensor Infrared Handfree Soap Cream Dispenser $12.19

Touchless Automatic Infrared SENSOR Trash Can BLACK 14G $79.99

Automatic Sensor Infrared Handfree Soap Dispenser Auto $3.98

Free Shipping Infrared Automatic Motion Sensor Soap Dispenser W Chime $17.99

White Infrared IR Motion Sensor Ceiling Wall Automatic Light Lamp Switch DC 12V $23.69

Ceiling Wall Infrared IR Automatic PIR Motion Sensor Switch light Lamp DC 12V $23.69

Nine Stars Infrared Touchless Automatic Motion Sensor Lid Open Trash Can 21 gall $135.95

Nine Stars Infrared Touchless Automatic Motion Sensor Lid Open Trash Can 8 gallo $50.95

New Touchless Automatic Infrared Sensor Trash Can-15L $43.99

Infrared IR Motion Sensor Automatic Light Lamp Bulb Holder Stand Switch 220V New $12.99

New Brass Automatic Infrared Sensor Taps Chromed Poshed Mixer Faucets N032120 $105.00

Automatic Sensor Infrared Handfree Soap Cream Dispenser $12.19

Infrared IR Motion Sensor Ceiling Wall Automatic Light Lamp Switch Save Energy $15.99

NST Nine Stars DZT-42-1 Infrared Touchless Automatic Motion Sensor $30.44

iTouchless Deodorizer Filtered Infrared Sensor Automatic Touchless Trash Can $71.40

5x Wall Mount Motion Automatic Infrared Sensor Switch 220V $34.97

2pcs Wall Mount Motion Automatic Infrared Sensor Switch 220V $13.98

2pcs 180-250V Wall Mount Motion Automatic Infrared Sensor Switch $13.96

Ceiling Wall Infrared IR Automatic PIR Motion Sensor Switch light Lamp $6.98

Wall Mount Motion Automatic Infrared Sensor Switch $7.47

Automatic Sensor Touchless Kitchen Infrared Handfree Soap Cream Dispenser 400ml $16.44

Infrared Motion Sensor Automatic Light Control Switch $8.36

Infrared Sensor Automatic Soap Dispenser WF-042 White $24.00

Nine Stars Infrared Automatic Sensor Opening Trash Can white 8.7 GALLONS 33‐1 $37.25

Nine Stars Infrared Sensor Automatic Opening Trash Can 11.1 Gallon DZT 42-17 $54.38

Wall Mount Motion Automatic Infrared IR Sensor Light Switch 3W to 200W $9.34