New
P2026111008
PIR Infrared Sweep Motion Sensor Module
DZD 550.00
Sensors
167 results
Sensors for Arduino, ESP32 and Raspberry Pi: temperature and humidity, distance, motion, gas, Hall effect, accelerometers and gyroscopes, as ready-to-wire modules or bare components.
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167 results
19 available
New
P2026111007
PIR Sweep Motion Sensor Module - Touch
DZD 550.00
New
DZD 450.00
New
DZD 680.00
New
P2026100904
GUVA-S12SD Solar Ultraviolet Sensor
DZD 1,150.00
New
P2026100890
Infrared Proximity Sensor – FC 51
DZD 450.00
P2026090810
A3144 Hall Effect Magnetic Sensor Module
DZD 250.00
DZD 1,100.00
DZD 7,900.00
P2026080622
MQ2 Gas Sensor
DZD 480.00
DZD 7,800.00
P2026070386
AHT20 + BMP280 High-Precision Temperature, Humidity and Atmospheric Pressure Sensor I2C / IIC
DZD 800.00
DZD 3,500.00
P2026070271
TP710 Digital Thermometer
DZD 4,200.00
DZD 1,850.00
DZD 2,300.00
Choosing the right sensor
The first criterion is the output type. An analog sensor like the LM35DZ or an LDR module returns a voltage to be read on an ADC input: simple, but you need to match the voltage range, sometimes with a voltage divider. A digital sensor (DHT11, DHT22, DS18B20 on 1-Wire, MPU6050 or BMP280 on I2C) sends an already converted value and connects on two or three pins, with a library on the code side.
Next, check the supply voltage and logic level: many modules accept 3.3 V and 5 V, but an ESP32 running at 3.3 V does not like a direct 5 V output. For temperature measurement, a waterproof DS18B20 suits a liquid or outdoor use, while a type K thermocouple with a MAX6675 reaches much higher, for an oven or a soldering iron.
- Weather sensors: temperature, humidity, ambient pressure.
- Ultrasonic, motion and gestures: HC-SR04 for distance, PIR HC-SR501 for presence.
- Accelerometers and gyroscopes: MPU6050, BMI160 for tilt and stabilization.
- Air, gas and water: MQ series, flow, soil moisture.
Also consider the wiring: a bare A3144 or SS41F needs a pull-up resistor, while a module already includes the conditioning circuitry and a status LED. The rest of the range is in Sensors and robotics.
Frequently asked questions
What is the difference between DHT11 and DHT22?
Both measure temperature and humidity on a single digital pin, but the DHT22 covers a wider range and gives finer resolution, with a stated accuracy of ± 0.5 °C. The DHT11 is enough for a learning project or an ambient display.
Which sensor should I choose to measure distance?
The HC-SR04 ultrasonic sensor is the most common and works well on hard surfaces from a few centimeters to a few meters. The VL53L0X, a laser time-of-flight sensor, is more accurate at short range and insensitive to the shape of the obstacle, but is hindered by glass and direct sunlight.
How do you measure a rotation speed?
An optical fork encoder such as the ITR9608 or TCST2103 counts the slots of a disc passing between the emitter and the receiver. A Hall effect sensor (A3144, SS41F) does the same job with a magnet on the shaft, and is more resistant to dust.
Is a linear Hall effect sensor the same as a threshold Hall sensor?
No. The SS49E is linear: its analog output varies with the strength of the magnetic field, useful for measurement. The A3144 and SS41F switch on or off once the field exceeds a threshold, which suits counting and position detection.
What makes the price of a sensor vary?
Accuracy and measurement range, the presence of conditioning electronics and factory calibration, the housing (bare, waterproof, metal probe), and the brand of the internal component. An industrial pressure sensor and a beginner's module are not in the same category.