All products · 5 of 1440
Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
IOT Plug & Play
MCU: ESP8266/ESP32 based (Wi-Fi 2.4GHz). Supply: 5V input, onboard 3.3V regulation. Protocols: MQTT/HTTP. Cloud/App support. GPIO with pre-wired ports. Typical sensors: DHT11/22, LDR, relay module, IR, PIR.
DHT11 Digital Temperature and Humidity Sensor Module 3.3V-5V for Arduino & Raspberry Pi
[Temperature Sensor] The DHT11 Digital Temperature and Humidity Sensor Module is a reliable and cost-effective sensor designed to measure ambient temperature and relative humidity. It combines a capacitive humidity sensing element and a thermistor with a built-in digital signal processing unit, providing calibrated digital output directly to microcontrollers. In addition, the DHT11 offers stable performance and excellent long-term reliability, making it suitable for environmental monitoring and automation applications. As a result, it is widely used in weather stations, smart home systems, greenhouse monitoring, HVAC systems, and educational electronics projects. Because the module includes the required pull-up resistor, interfacing with microcontrollers becomes simple and straightforward. Furthermore, only three connections are required: VCC, GND, and Data Output. The sensor operates from a wide voltage range of 3.3V to 5.5V DC, ensuring compatibility with Arduino, Raspberry Pi, ESP32, STM32, NodeMCU, and other development boards. Moreover, readily available libraries and example codes allow quick integration into projects. The DHT11 utilizes advanced digital signal acquisition technology and dedicated temperature-humidity sensing techniques to ensure accurate and dependable measurements. 🔹 Key Features Measures temperature and humidity simultaneously Calibrated digital signal output Low power consumption High reliability and long-term stability Capacitive humidity sensing technology Built-in pull-up resistor on module Compatible with Arduino, ESP32, Raspberry Pi, and STM32 Simple 3-wire interface Easy integration into IoT projects Compact and lightweight design 🔹 Technical Specifications Sensor Model: DHT11 Operating Voltage: 3.3V – 5.5V DC Output Type: Digital Serial Output Humidity Measurement Range: 20%RH – 90%RH Humidity Accuracy: ±5%RH Humidity Resolution: 1%RH Temperature Measurement Range: 0°C – 50°C Temperature Accuracy: ±2°C Temperature Resolution: 1°C Sampling Rate: 1Hz (One Reading Per Second) Long-Term Stability: < ±1%RH/Year Interchangeability: Fully Interchangeable Sensor Technology: Capacitive Humidity Sensor + Thermistor 🔹 Pin Configuration Pin 1 (VCC): 3.3V – 5.5V DC Power Supply Pin 2 (DATA): Digital Serial Data Output Pin 3 (GND): Ground 🔹 Applications This sensor module is suitable for: Arduino projects Raspberry Pi projects ESP32 projects IoT systems Weather monitoring stations Smart home automation Greenhouse monitoring HVAC control systems Environmental monitoring Educational electronics projects 🔹 Package Includes 1 × DHT11 Digital Temperature and Humidity Sensor Module
ESP32 38-Pin Development Board – IoT Microcontroller with WiFi & Bluetooth
[ESP Modules] Description The ESP32 38-Pin Development Board is a versatile and cost-effective microcontroller platform perfect for a wide range of IoT, automation, and wireless communication projects. Powered by the ESP32 SoC, this board offers integrated WiFi and Bluetooth (BLE) capabilities, making it ideal for developing smart home devices, industrial control systems, robotics, and DIY electronics. For the best IoT experience, you can pair this board with our LoRa SX1278 Module for long-range communication or integrate it with our 0.96-inch OLED Display for real-time data display. Need reliable power control? Combine it with our 2-Channel Relay Module with Optocoupler for safe switching of external devices. Compatible with popular platforms like Arduino IDE, MicroPython, and PlatformIO, this ESP32 board is user-friendly for both beginners and professionals. The board features 38 GPIO pins, enabling you to connect a variety of sensors, actuators, and other peripherals—available in our IoT Components category. Key Features: ESP32 Dual-Core 32-bit LX6 Processor Built-in 2.4 GHz WiFi and Bluetooth 4.2 (BLE) 38 GPIO Pins supporting multiple digital and analog functions Interfaces: UART, SPI, I2C, PWM, ADC, DAC Ultra-low power operation modes ideal for battery-powered IoT devices Supports Arduino IDE, MicroPython, and other environments Onboard micro-USB connector for easy power and programming Reset and boot buttons for firmware flashing Breadboard-friendly form factor Applications: IoT development projects Smart home automation – compatible with Vihaan IoT Gateway Solutions Wireless data logging systems Robotics and drone controllers Industrial monitoring devices Sensor networks – connect with our DHT11/DHT22 Temperature Sensors Specifications: Chipset: ESP32 (Generic) Operating Voltage: 3.3V (5V tolerant inputs) Flash Memory: 4MB Connectivity: WiFi IEEE 802.11 b/g/n, Bluetooth 4.2 BLE Interfaces: GPIO, UART, SPI, I2C, ADC, DAC, PWM USB Interface: Micro USB Form Factor: 38-Pin, breadboard compatible Package Includes: 1 x ESP32 38-Pin Generic Development Board
Out of stockDHT11 Temperature and Humidity Sensor Module Digital Output 3.3V-5V
[Temperature Sensor] The DHT11 Temperature and Humidity Sensor Module is a compact and reliable environmental sensing module designed to measure surrounding temperature and humidity levels. Based on the popular DHT11 sensor, it combines a humidity sensing component and a temperature sensor with a calibrated digital signal output. In addition, the module provides direct digital data output, eliminating the need for complex analog signal processing. As a result, it can be easily interfaced with Arduino, ESP32, Raspberry Pi, STM32, and other microcontroller platforms. Because of its low power consumption and stable performance, the DHT11 sensor is widely used in weather monitoring systems, home automation, greenhouse monitoring, HVAC systems, and educational electronics projects. Furthermore, the onboard mounting holes allow quick and secure installation. The module operates from 3.3V to 5V DC, making it suitable for both 3.3V and 5V microcontroller systems. Moreover, it offers good long-term stability and reliable environmental monitoring performance. 🔹 Key Features Based on DHT11 temperature and humidity sensor Digital signal output Low power consumption High reliability and long-term stability Measures temperature and humidity simultaneously Compatible with 3.3V and 5V systems Easy interfacing with microcontrollers Compact PCB module design Onboard power indicator LED Mounting holes for easy installation 🔹 Technical Specifications Sensor Type: DHT11 Operating Voltage: 3.3V – 5V DC Output Signal: Digital Output Humidity Measurement Range: 20%RH – 95%RH Humidity Accuracy: ±5%RH Temperature Measurement Range: 0°C to 50°C Temperature Accuracy: ±2°C Sampling Rate: 1Hz (One Reading Per Second) Power Indicator: Red LED Mounting Type: PCB Module with Fixing Holes Interface: 3-Pin Digital Interface 🔹 Pin Configuration VCC – Power Supply (3.3V–5V) DATA – Digital Signal Output GND – Ground 🔹 Applications This sensor module is suitable for: Arduino projects ESP32 projects Raspberry Pi projects Weather stations Greenhouse monitoring Home automation systems HVAC monitoring IoT applications Environmental monitoring systems Educational electronics projects 🔹 Package Includes 1 × DHT11 Temperature and Humidity Sensor Module
Out of stockDHT11 Temperature And Humidity Sensor Module – for Arduino Raspberry STM (DHT11 with PCB)
[Temperature Sensor] Description DHT11 is a Humidity and Temperature Sensor, which generates calibrated digital output. DHT11 can be interface with any microcontroller like Arduino, Raspberry Pi, etc., and get instantaneous results. DHT11 is a low-cost humidity and temperature sensor which provides high reliability and long-term stability. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and outputs a digital signal on the data pin (no analog input pins needed). Its very simple to use, and libraries and sample codes are available for Arduino and Raspberry Pi. This module makes it easy to connect the DHT11 sensor to an Arduino or microcontroller as includes the pull-up resistor required to use the sensor. Only three connections are required to be made to use the sensor – Vcc, Gnd, and Output. It has high reliability and excellent long-term stability, thanks to the exclusive digital signal acquisition technique and temperature & humidity sensing technology. Specifications:- Power Supply： 3.3~5.5V DC Output： 4 pin single row Measurement Range： Humidity 20-90%RH， Temperature 0~50℃ Accuracy： Humidity +-5%RH， Temperature +-2℃ Resolution： Humidity 1%RH， Temperature 1℃ Interchangeability： Fully Interchangeable Long-Term Stability： <±1%RH/year Pin Description:- Pin 1: Power +Ve (3.3VDC to 5.5VDC Max wrt. GND) Pin 2: Serial Data Output Pin 3: Power Ground or Power –Ve * Product Images are shown for illustrative purposes only and may differ from actual product.