12V Piezo Buzzer Plate (27mm) Piezo Electric Sensor /Buzzer/Transducer-27mm , it is basically a device which converts voltage to vibration and vibration to voltage. It normally comes in handy to measure knock (knock sensor) or vibration (vibration sensor). Now a days it is also used extensively in power generation projects e.g. Foot Step Power Generation. A Piezoelectric transducer is a device that uses the piezoelectric effect to measure pressure, acceleration, strain or force by converting them to an electrical charge These devices can be used both as sensors and actuators, so they're referred to as transducers, a term applied to any device that can convert one form of energy to another. The sensor turns mechanical energy into electric potential, and the actuator converts electrical energy into mechanical force or motion. The Piezoelectric material used here, ceramic lead zirconate titanate known as PZT has the ability to provide twice the voltage of Quartz under a given force. These transducers are simple, reliable, and very robust, and so find wide use in industry, medicine, and aero-space work. They're unaffected by external electromagnetic fields, and so can be used in applications where electronic sensors would fail. They are stable over a broad range of temperatures, but may be effected by long use at high temperatures.

12V Mini Police Siren This is a 12 Volt Mini Police Siren, which can be used in your project for alarm purposes. Though it is called “Mini Siren”, there is nothing mini about it. The sound is ear-deafening, and turn this ON at your own risk. If you are tired of an old buzzer and want something with a loud noise, then this is the siren for you. This 12V Police Siren Buzzer is an ideal replacement for your DIY car alarm system or any other vehicle security device. The 12V Police Siren Buzzers are made using high-quality materials and components. They have been built to last and will provide years of reliable service. Application: Home Security System Vehicle Security Fire Alarms Intruder Alarms Burglar Alarm

12V Relay Cube This is a 12V Relay Cube. This cube relay has an operating voltage of 12V and has a max current capacity of 7A. This makes it most suitable for use in microcontroller-based devices like Arduino. It is an SPDT 12V Relay. Relays are used where it is necessary to control a circuit by an independent low-power signal, or where several circuits must be controlled by one signal. APPLICATIONS: Control Solenoids Motors Bulbs and Lamp Home Automation Projects Freewheeling diode to protect your microcontroller Also check 12V 1 Channel Relay Module with a 10A switching capability. It is an electronic module designed to control an electrical circuit using an electromagnetic switch.

12V STC-3028 Dual Digital Thermostat Temperature Humidity Control This is a 12V STC-3028 dual-display thermostat temperature controller. The temperature controller has the characteristic of high precision, high sensitivity, and high stability. Supports temperature correction and support for energy loss. Control temperature by setting the temperature setting value and the difference value. Alarm when the temperature exceeds the temperature limit or when sensor error. Thermostats are used in any device or system that heats or cools to a setpoint temperature, examples include building heating, central heating, air conditioners, HVAC systems, water heaters, as well as kitchen equipment including ovens and refrigerators, and medical and scientific incubators. Key Features: ABS flame retardant plastic shell, more safe to use. Microcomputer intelligent digital display thermostat, dual display dual temperature. With a wide temperature measuring range and controlling range, comes with an integrated sensor. The large and clear digital display shows measuring temperature, high accuracy of temperature measuring, and controlling. Suitable for automatic switching of refrigeration and heating devices such as seafood machines and cooling water machines. Applications: Terrarium Greenhouse Plants Breeding and Incubation Scientific incubators Also check STC-3028 Digital Temperature Humidity Controller 110-220V . It can be used with a sensor to monitor temperature and humidity. It has a dual display and can switch between cool and heat modes.

12V Warm White 5050 SMD LED Strip Flexible 5M/Roll NO Waterproof This Bright 5050 SMD LED, has high intensity and reliability. It has a significantly longer life span of around 50,000 hours than ordinary LED strips available in the market and therefore it can be used for application where long-life performance required. This 5 meter LED strip with around 300 LEDs on strip operates at 12V at 2A DC supply. The Strip has soldered endpoint from both ends to connect strip conveniently. The flexible ribbon is very easy for curving around bends and for completely smooth and even light spread, solving the uneven luminous problem. This LED strip has the advantage of Ultra-bright but running at low-temperature low power consumption. The strip comes with 5M self-adhesive to easy install. With this you can create different ambience at the comfort of your hands just by switching lights on and the designer sequence of lights that are already preset. These lights can be used as decorative pieces around the house especially during festive occasions, office buildings, walls etc. or for any functions to brighten the occasion. Application: Ideal for decoration of building outlines, landscape illumination, amusement themes. Holiday light sculpture, decorative figure, active signs, displays, shop windows Storefronts, bar, nightclub, street, sidewalk, deck, park, porch, staircase, railing, ceiling, or driveway.

12V Warm White 5050 SMD LED Strip Flexible 5M/Roll Waterproof (5 Meter) This Bright 5050 SMD LED, has high intensity and reliability. It has a significantly longer life span of around 50,000 hours than ordinary LED strips available in the market and therefore it can be used for application where long-life performance required. This 5 meter LED strip with around 300 LEDs on strip operates at 12V at 2A DC supply. The Strip has soldered endpoint from both ends to connect strip conveniently. The flexible ribbon is very easy for curving around bends and for completely smooth and even light spread, solving the uneven luminous problem. This LED strip has the advantage of Ultra-bright but running at low-temperature low power consumption. The strip comes with 5M self-adhesive to easy install. With this you can create different ambience at the comfort of your hands just by switching lights on and the designer sequence of lights that are already preset. These lights can be used as decorative pieces around the house especially during festive occasions, office buildings, walls etc. or for any functions to brighten the occasion. Application: Ideal for decoration of building outlines, landscape illumination, amusement themes. Holiday light sculpture, decorative figure, active signs, displays, shop windows Storefronts, bar, nightclub, street, sidewalk, deck, park, porch, staircase, railing, ceiling, or driveway.

12X12X17mm 4 Pin Tactile Push Button Switch (Pack of 5) The 12x12x17mm 4 Pin Tactile Push Button Switch is designed for applications that demand both precision and durability. This tactile switch 4 pin model features a 17mm extended actuator, making it easy to operate even in dense control panels or embedded systems. Its momentary action provides instant feedback, ideal for OEM devices, industrial automation, and DIY electronics. The through-hole mounting ensures a firm connection on PCBs, while the compact design allows flexible integration into various electronic assemblies. Whether you're building a prototype or repairing equipment, this push button switch offers dependable performance and smooth tactile feedback. Features: The Extended Actuator (17mm) provides simple access in recessed enclosures. Standard 4-pin design. Secure electrical connection and stable mounting Through-Hole Mounting Ideal for durable circuit board assembly. Momentary Tactile Feedback Reliable actuation and clear response. Rated for 12 V DC. withstands up to 100mA current in normal applications. Applications: Industrial control systems Embedded product design Diagnostic equipment OEM Electronics and Appliances Audio, video, and communication hardware

12x12x7.3mm Tactile Push Button Switch 12x12x7.3mm Tactile Push Button Switch is widely used as a standard input “buttons” on electronic projects. These work best when you mount it on PCB but can also be used on a solderless breadboard for temporary connections in prototypes. The pins are normally open (disconnected) and when the button is pressed they are momentarily closed and complete the circuit. This tactile switch also offers reliable dome contact technology and strong tactile feedback, with multiple operating forces to choose from. These mini push button switches uses in telecommunications, consumer electronics, audio/visual, medical devices, testing/instrumentation, and computer/peripherals.

13.56 MHz NTAG213 137 Byte Sticker NFC Tag This is the 13.56 MHz NTAG213 137 Byte Sticker NFC Tag, Use this multipurpose Sticker NFC Tag for your project. This NFC tag is used for contactless small data transfer with a 13.56 MHz operating Frequency. The working distance is up to 100mm depending upon the antenna geometry and reader configuration. This is a blank 13.56MHz RFID/NFC tag. The ntag213 contains a small RFID chip and an antenna and is passively powered by the reader/writer when placed a couple of inches away. These chips can be written to & store up to 137 Bytes of data in writable EEPROM divided into banks and can handle over 100,000 re-writes. Applications: Connect to a WiFi network Connect to a Bluetooth device Activate Hotspot on your phone Share your NFC Business card Device Authentication Home Automation Set Alarms Change Sound Profiles Change Display Brightness Activate Power Saving Mode

13.56 MHz RFID Reader/Writer This is 13.56 MHz RFID Tag. The RFID technology is used for sensing and identifying tagged people and objects for access control, automation, and a whole range of different applications. Designed to work on the industry-standard carrier frequency of 13.56 MHz Sensitivity Range is about 6cm from the antenna. Also check 13.56MHz USB RFID Reader-Writer with Card & Keychain from us (Iotcart). It operates at a baud rate of 9600 and a frequency of 13.56MHz. The package includes one RFID module, one card, and one keychain. The device allows for both reading and writing data on the card/keychain, with a storage capacity of up to 1Kb