A Magnetic Contact is an electrically controlled switch used for switching a power circuit, similar to a relay. Magnetic contacts give exact position of the door (open/close).
The PIR (Passive Infra-Red) Sensor HC-SR501 is a pyroelectric device that detects motion by measuring changes in the infrared levels emitted by surrounding objects. This motion can be detected by checking for a high signal on a single I/O pin.
Module provides an optimized circuit that will detect motion up to 6 metres away and can be used in burglar alarms and access control systems.
The PIR sensor and Fresnel lens are fitted onto the the PCB. This enables the board to be mounted inside a case with the detecting lens protruding outwards, whilst still allowing easy access to the controls inside the case.
PIR Motion Detector Module Features
• Settling time: 60 seconds
• Compact size (24 x 32 mm)
• Supply Voltage: DC3V-5V
• Current drain :< 50uA
• Voltage Output: High/Low level signal: 0-3.3V
• High sensitivity
• Delay time: 5s-18 minute(as customer requirement)
• Operation Temperature: -15oC -70 oC
• Infrared sensor: dual element, low noise, high sensitivity
• Light sensor: CdS photocell (can be add as customer requirement
The Sharp Optical Dust Sensor (GP2Y1010AU0F) is especially effective in detecting very fine particles like cigarette smoke, and is commonly used in air purifier systems.
The HC-SR04 is an inexpensive ultrasonic distance sensor that works out of the box with an Arduino.
The Allegro A1101-A1104 and A1106 Hall-effect switches are next generation replacements for the popular Allegro 312x and 314x lines of unipolar switches. The A110x family, produced with BiCMOS technology, consists of devices that feature fast power-on time and low-noise operation. Device programming is performed after packaging, to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress. Unique Hall element geometries and low-offset amplifiers help to minimize noise and to reduce the residual offset voltage normally caused by device overmolding, temperature excursions, and thermal stress.
The A1101-A1104 and A1106 Hall-effect switches include the following on a single silicon chip: voltage regulator, Hall-voltage generator, small-signal amplifier, Schmitt trigger, and NMOS output transistor. The integrated voltage regulator permits operation from 3.8 to 24 V. The extensive on-board protection circuitry makes possible a ±30 V absolute maximum voltage rating for superior protection in automotive and industrial motor commutation applications, without adding external components. All devices in the family are identical except for magnetic switchpoint levels.
Photoelectric Switch HY860D Features a built-in bracket for easy mounting. Consisted of an infrared emitter and a phototransistor, is located face-to-face on the optical axes in a leaded package. During operation, output phototransistor switch from ON state to OFF state when object is inserted into gap between emitter and sensor. HY860D is used for object detection and automatic counting, such as printer, scanner, copy machine, facsimile machine and vending machine, etc.
This is a simple and easy moisture sensor that can be used for the detection of soil moisture. The module outputs a high level, when soil moisture is deficit, the output is low level. Using the sensor produces a watering device automatically, let you don't choose and employ persons to manage the plants in the garden.
Soil Moisture Sensor Features:
Metal Detector with speaker and ttl output.
Features And Usage
Note: it will not detect coins if it is in the middle of the coil, it may detect if it is close to the coil. it will not detect any type of explosives.
Description: This basic Piezo Vibration Sensor from Measurement Specialties is often used for flex, touch, vibration and shock measurements. A small AC and large voltage (up to /-90V) is created when the film moves back and forth. A simple resistor should get the voltage down to ADC levels. Can also be used for impact sensing or a flexible switch. Comes with solderable crimp pins and a mass attached to the tip. This mass increases the sensitivity to motion.