Top 8 Infrared Proximity Sensor Short Range Sharp Gp2y0a41sk0f

Offered in a type 6P enclosure with cable interface, the general purpose ultrasonic level transmitter provides continuous level measurement up to 32.8′ with a 4-20 milliampere signal output, and is configured via our free Webcal software. This non-contact liquid level sensor is ideally suited for corrosive, ultrapure, sticky or dirty liquids, and is broadly selected for bulk storage, day tank, lift station and process tank level applications. Submersible type 6P enclosure is ideal for sump and below grade installations. Short 4″ or 8″ dead band maximizes the measurable filling capacity of the tank. Measurement range: 4″ to 9.8′. Accuracy: +/- 0.2 percent of range. Resolution: 0.019″. Dead band: 4″. Beam width: 2″. Configuration: WebCal PC. Windows USB 2.0. Memory: Non-volatile. Supply voltage: 24 VDC (loop). Consumption: 0.5W. Loop resistance: 500 ohms at 24 VDC. Signal output: 4-20 milliampere two-wire. Signal invert: 4-20 or 20-4 milliampere. Signal fail-safe: 4, 20, 21, 22 milliampere or hold last. Process temprature: -4 degree to 140 degree F. Temprature compensation: automatic. Ambient temprature: -31 degree to 140 degree F. Pressure: MWP equal to 30 PSI. Enclosure rating: Type 6P, encapsulated, corrosion resistant and submersible. Enclosure material: polycarbonate. Transducer material: PVDF. Cable jacket material: polyurethane. Cable type: 4-conductor, shielded. Cable length: 10′. Process mount: 1″ NPT. Mount gasket: Viton. Classification: general purpose. Compliance: CE, RoHS. Approvals: cFMus. Measures 4.1″ width by 2.9″ height.

Excelity HC-SR04 Ultrasonic Moudle is to measure the distance of object by 40KHz ultrasonic sound wave. This moulde provides 2cm-400cm non-contact measurement function, the ranging accuracy can reach to 3mm. It is great for the project that need distance measurement, such as Distometer,intelligent robot navigation system,etc.

Module main technical parameters:
-Working Voltage : 5V(DC)
-Static current: Less than 2mA
-Output signal: Electric frequency signal, high level 5V, low level 0V
-Sensor angle: Not more than 15 degrees
-Detection distance: 2cm-450cm.
-High precision: Up to 0.3cm
-Input trigger signal: 10us TTL impulse
-Echo signal : output TTL PWL signal

Pin definition:
-VCC: connect to 5V DC
-Trig(T): control pin, connect to a standard I/O port
-Echo(R):receiving end, connect to a standard I/O port
-GND: Connect to Ground

Notes:
-1. The module should be inserted in the circuit before been powered to avoid producing high level of misoperation; if producted, power it again.
-2. Before connect to VCC terminal, the GND terminal should be connected the module first,otherwise,it will affect the normal work of the module.

Module Working Principle:
-1. Pull the Trig pin to high level for more than 10us impulse, the module start ranging.
-2. The module automatically sends eight 40KHz square wave to detect whether a signal is returned.
-3. Finished ranging, If you find an object in front, Echo pin will be high level, and based on the different distance, it will take the different duration of high level.
-4. Calculated the distance, the distance = (high level time * sound velocity (340M/S) / 2.

Package included:
-3pcs HC-SR04 Moulde
-3pcs Mounting Bracket

The general purpose ultrasonic level transmitter provides continuous level measurement up to 49.2″ (1.25m) with a 4-20 mA signal output, and is configured via our free WebCal software. This non-contact liquid level sensor is ideally suited for corrosive, sticky or dirty liquids, and is broadly selected for small day tank, skid, IBC, sump and process tank level applications. Range: 49.2″ (1.25m). Accuracy: 0.125″ (3mm). Resolution: 0.019″ (0.5mm). Dead band: 2″ (5cm). Beam width: 2″ (5cm). Configuration: WebCal PC Windows USB 2.0 USB 2.0. Memory: Non-volatile. Supply voltage: 24 VDC (loop). Consumption: 0.5W. Loop resistance: 400O maximum. Signal output: 4-20 mA, two-wire. Signal invert: 4-20 mA or 20-4 mA. Signal fail-safe: 4 mA, 20 mA, 21 mA, 22 mA or hold last. Process temperature: F: 20 to 140 degree, C: -7 to 60 degree. Temperature comp.: Automatic. Ambient temperature: -31 to 140 degree F, -35 to 60 degree C. Pressure: MWP = 30 PSI (2 bar). Enclosure rating: Type 6P, encapsulated, corrosion resistant and submersible. Encloser material: Polycarbonate. Strain relief material: Santoprene. Trans. material: PVDF. Cable jacket material: Polyurethane. Cable type: 4-conductor, shielded. Cable length: 48″ (1.2m). Process mount: 1″ NPT. Mount gasket: Viton. Classification: general purpose. Compliance: CE, RoHS. Approvals: cFMus.

It is a component widely used in automatic control industry for detecting, controlling, and noncontact switching.
When proximity switch is close to some target object, it will send out control signal.
It’s widely used in machine, paper making, light industry for limiting station, orientation taking count, speeding trial ect.

The IR Infrared Obstacle Avoidance Sensor Module detection range can be through the potentiometer to adjust and have small interference, easy to assemble, easy to use. It can be widely used in robot obstacle avoidance, obstacle avoidance car, line count, and black and white line tracking and so on
On-line tutorial: http://osoyoo.com/2017/07/arduino-lesson-obstacle-avoidance-sensor/

Specification
The output port OUT sensor module can be directly connected to the microcontroller IO port , you can directly drive a 5V relay ;
the module detects the distance 2 ~ 30cm, detection angle 35 °, the distance can detect potential is adjusted
Can be used for 3-5V DC power supply modules
When the power is turned on, the red power indicator light
Using the comparator LM393
Interface :
1. VCC: External 3.3V-5V voltage (can be directly connected to 5v MCU and 3.3v MCU)
2. GND: GND External
3. OUT: Small board digital output interfaces (0 and 1)
Connection : VCC-VCC; GND-GND; OUT-IO
With the screw holes of 3mm , easy fixed installation
Board Size : 3.1CM * 1.5CM / 1.22 * 0.59″

Package includes:
10 x Infrared Obstacle Avoidance Module

There are 4 pins out of the module: VCC , Trig, Echo, GND. So it’s a very easy interface for controller to use it ranging. 
The all process is: pull the Trig pin to high level for more than 10us impulse, the module start ranging; 
Finish ranging, If you find an object in front, Echo pin will be high level, and based on the different distance, it will take the different duration of high level. 
So we can calculated the distance easily: Distance = ((Duration of high level)*(Sonic :340m/s))/2

Description:
Wide operating voltage range: 4-28V
Can output 3.3V power supply
Blocking time, adjustable distance
Using special signal processing control chip RCWL-9196
Compared with the traditional infrared induction PIR, the penetration detection ability

About pin header:
CDS = No connection
VIN = 5vdc (+) (9v battery also Ok)
OUT = 3.3vdc signal out when triggered
GND = 0vdc (-)
3V3 = No connection (in most applications)

C-TM: Adjust repeat trigger time (default 2 s). Adding a capacitor will give a longer repeat trigger time.
R-GN: Detection distance adjustment (default 7 m). Adding a resistor the detection distance will become shorter. If connected with a 1-MΩ resistor, detection range is about 5 m.
R-CDS: By adding a resistor (in parallel with the internal 1-MΩ resistor), user can change the light detection threshold as per individual requirement. This is applicable only when a light sensor is soldered in its pads (CDS) on the front of the circuit board. A 47–100K resistor works fine with standard 5-mm LDRs

Package Includes:
5 X RCWL-0516 Module Microwave Radar Sensor
5 X 4P Bend Pin Headers
FAQ:
Q: Can you use the RCWL-0516 with an ESP8266? Or will you get random false positive results?
A: I’ve done a short term test with the ESP8266 on a NodeMCU board. It seems to work just fine. The ESP greater Version 12-E is shielded and is FCC certified. So it should, by definition, not interfere with other electronics. However, one viewer reported random false positive results on a long shot.
Q: Is the water in the human body responsible for the detection?
A: Probably. I tested it with one empty and one water filled bottle. And even with a cat. And it seems that the bigger the object the further away it can be detected.