0.5A 100V 10W High Sensitive White Set Door Window Contact Magnetic Reed Sensor COM45 ,R12

DescriptionA normally-closed reed switch is closed when it is not near a magnet; as a magnet is brought close to it, a normally-closed switch will open.Output : Switching Transducer Type : Vibration Sensor Usage : Reed Sensor Switch Dimensions: 27(mm)X14(mm)X8(mm) Switch pattern: N/O normally open, alarm-on-broken Contact capacity: Maximum switch current: 0.5Amp Voltage: 200 VDC Rated power:10W Actuation distance:20-25mm Wire lead: 22 Awg, About 350mm long Mounting method: SMD (by screws or double-sided tapes) Recommendations in application: wooden door, windowEasy installation Reliable performance Good characteristic of abrasion-proof Best Choice for you to protect family There are two types of reed switches: “normally open” reed switches and “normally closed” reed switches. The metal reeds on a normally open switch stay open when there is no magnet near the switch. In the presence of a magnetic field, the contacts of a normally-open reed switch will close. A normally-closed reed switch is closed when it is not near a magnet; as a magnet is brought close to it, a normally-closed switch will open.Getting started with the High Sensitive White Set Door Window Contact Magnetic Reed SensorThis tutorial demonstrates how to use a magnetic reed switch. I’ll do a quick overview on how it works and show a project example using an Arduino.DescriptionA magnetic contact switch is basically a reed switch encased in a plastic shell so that you can easily apply them in a door, a window or a drawer to detect if the door is open or closed.The switch that we are going to use has two parts: the switch itself, that usually comes opened, and the magnet. When you buy this switch, it also comes with 4 screws, so that you can attach it to your door.How does it work?It’s very very simple.The electrical circuit is closed when a magnet is near the switch (less than 13 mm (0.5’’) away). When the magnet is far away from the switch, the circuit is open. See the figure below.Project ExampleIn this example, we will turn on a red LED if your door is open and a green LED if your door is closed.Hardware required1× Magnetic Reed SwitchArduino UNO1× green LED1× red LED2× 220Ω resistor1× 10kΩ resistor1× breadboardConnecting the HardwareHere’s the schematics for this example.Uploading SketchFor this example, upload the following code:int ledOpen=8; int ledClose=10; int switchReed=6;void setup(){ pinMode(ledOpen, OUTPUT); pinMode(ledClose, OUTPUT); pinMode(switchReed, INPUT); Serial.begin(9600); }void loop(){if (digitalRead(switchReed)==HIGH){ digitalWrite(ledOpen, LOW); digitalWrite(ledClose, HIGH); Serial.println(“Your Door is Closed”); } else { digitalWrite(ledOpen, HIGH); digitalWrite(ledClose, LOW); Serial.println(“Your Door is Open”); } delay(1); }NOTE: IF you  get stray ‘223’ errors The problem is with your “and ”  characters. Replace them with ordinary quotes, ” , and you should be fine.DemonstrationIn this example, we will turn on a red LED if your door is open and a green LED if your door is closed.