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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Out of stockPiezo Electric Active Big Buzzer B27
[Buzzer And Mic] 5-24V Buzzer Continues Beep – Big 27 A buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric (piezo for short). Typical uses of buzzers and beepers include alarm devices, timers, and confirmation of user input such as a mouse click or keystroke. A piezoelectric element may be driven by an oscillating electronic circuit or other audio signal sources, driven with a piezoelectric audio amplifier. Sounds commonly used to indicate that a button has been pressed are a click, a ring, or a beep. Voltage: 5 V Sound : 90dB Housing Material: ABS Plastic. Perfect for motorcycle stand alarm, alarm clock, or any project which you need an alarm buzzer for getting immediate attention. Note: This product comes in different design patterns. We ship randomly.
Out of stockHigh Current Active Alarm Buzzer Driver Module
[Current Sensor] A High Current Active Alarm Buzzer Driver Module is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric. Just like what you are viewing now, it is 5V DC Electronic Part Active Buzzer Module. Using top quality material, it is durable in use. What’s more? This active buzzer rings out as long as it is electrified. Compared with a passive buzzer, it is a bit expensive but easier to control. Typical uses of buzzers include alarm devices, timers, and confirmation of user input such as a mouse click or keystroke. A good choice for you all! Features: An active buzzer with a concussion internal source- so long as it will be called an energized. The program easy to control- SCM can let a high-low sound- while passive buzzer did not. Operating voltage 3.3V-5V PCB Dimension: 3.1cm*1.3cm. Color: Blue Easy to use Package Includes : 1 x High Current Active Alarm Buzzer Driver Module
Out of stock12V 6 Channel with Light Coupling Relay Module
[Relay Module] This 6 Road/Channel Relay Module (with light coupling) 12V module meets the safety standard as control areas and load area have the isolation groove. Optical coupling isolation module. The triggering of the 6 Road/Channel Relay Module is reliable, more stable. The double FR–4 circuit board design, high-end SMT process. It has power and relay operation instructions. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The inputs of the 8 Channel 12V Relay Module are isolated to protect any delicate control circuitry. A wide range of microcontrollers such as Arduino, AVR, PIC, ARM and so on can control it. The use of such high-voltage relay eliminates the risk of heating up of the relay as electromechanical relay limit the current consumption in accordance with a voltage rating. Module interface: The positive (according to the relay voltage VCC: connect power supply) GND: connect power negative IN1: relay module (effective) high-level trigger signal trigger end IN2: relay module (effective) high-level trigger signal trigger end IN3: relay module (effective) high-level trigger signal trigger end IN4: relay module (effective) high-level trigger signal trigger end IN5: relay module (effective) high-level trigger signal trigger end IN6: relay module (effective) high-level trigger signal trigger end IN7: relay module (effective) high-level trigger signal trigger end IN8: relay module (effective) high-level trigger signal trigger end Meaning of High level and Low-level High-level trigger refers to using the anode voltage at the VCC connection way of a trigger and triggers the end when the trigger side has a positive voltage or to trigger voltage when the relay is off. Low-level trigger refers to using the negative voltage at the GND connection way of a trigger and triggers the end when the trigger side has 0 v low voltage or voltage to can trigger, the relay is off. Features : Equipped with high-current relay 10A@250VAC / 10A@30VDC It can control both AC and DC appliances such as Solenoids, Motors, lights, fans, etc High-quality screw terminals (Terminal Block) provided (C, NC, NO) for quick and easy connection A freewheeling diode to protect your microcontroller Input Signal Pin connected to Burg stick for easy accessibility LED status indicators to indicate the relay ON/OFF status Mounting holes provided Signal input with a high-level signal, the common and often start conduction; The relay can directly control all kinds of equipment and load; One often opened a normally closed contact; Blue KF301 terminal line more convenient. It is also able to control various appliances and other types of equipment with a large current. Red working status indicator lights are conducive to safe use. Widely used for all MCU control, industrial sector, PLC control, smart home control. Package Includes: 1 x 12V 6 Channel with Light Coupling Relay Module
5V 10A PCB Mount Relay SPDT 5 Pin Electromechanical Relay for DIY Electronics
[Relays] Description: The 5V DC Relay Coil 10A SPDT Relay is a high-quality electromagnetic relay designed for reliable AC and DC load switching applications. It operates using a 5V DC coil voltage, making it suitable for Arduino boards, microcontrollers, IoT devices, and automation circuits. In addition, the relay supports switching loads up to 10A, allowing users to control high-power devices safely using low-voltage control signals. As a result, it is widely used in home automation systems, robotics projects, smart switching circuits, and industrial electronics. Because of its SPDT (Single Pole Double Throw) contact configuration, the relay can switch between Normally Open (NO) and Normally Closed (NC) outputs. Furthermore, the through-hole PCB mounting design allows easy installation on circuit boards and custom electronic projects. The relay supports both AC and DC load switching, including 250V AC at 10A and 30V DC at 10A. Moreover, the sealed plastic housing provides high isolation between the coil and contacts, improving safety and durability. This relay is commonly used for controlling lights, fans, motors, pumps, appliances, and power control systems in DIY as well as industrial applications. 🔹 Key Features 5V DC electromagnetic relay SPDT contact configuration (COM, NO, NC) Supports AC and DC load switching High current handling up to 10A Through-hole PCB mounting design High isolation between coil and contacts Long mechanical and electrical life Suitable for Arduino and automation projects 🔹 Technical Specifications Product Type: Electromagnetic Relay Coil Voltage: 5V DC Contact Rating: 10A Rated Load: 250V AC @ 10A (50/60Hz) Rated Load: 30V DC @ 10A Contact Type: SPDT (COM, NO, NC) Frequency: 50 / 60 Hz Coil Resistance: Approx. 70–100Ω Mounting Type: Through-Hole PCB Mount Isolation: High Isolation Between Coil & Contacts Switching Life: Long Mechanical & Electrical Life 🔹 Applications This relay is suitable for many electronic and electrical applications, including: Arduino projects Home automation systems Industrial automation Robotics projects Smart switching systems Motor and pump control Power supply circuits DIY electronics projects 🔹 Package Includes 1 × 5V 10A PCB Mount Relay 5 Pin