Reference: RBD-2677

0.28" LED Digital Voltmeter Ammeter with 100V/10A Measurement With 100A Shunt

1 review

Operating on a 5V DC power supply with a current consumption of less than 60mA, this 0.28-inch Digital Voltmeter Ammeter is a versatile tool for measuring voltage and current. With a testing range of 0-100V for voltage and 1-100A for current, this meter offers precise measurements with easy readability, even in dim light conditions.

Reference: RBD-2508

ENS160 AHT21 Carbon Dioxide CO2 eCO2 TVOC Air Quality Temperature & Humidity Sensor

1 review

The ENS160 is a digital multi-gas sensor specifically designed for indoor air quality testing that optimizes the detection of a wide variety of gases and volatile organic compounds (VOCS), including toluene, hydrogen, ethanol, N02 and ozone. The air quality sensor is used in home and building automation, consumer products, electrical and air purification

Reference: RBD-2686

DC 0-100V 100A Voltage and Current Dual LED Display Panel Meter

2 reviews

Operating current: 20mA Operating voltage: DC 4.5 ~ 30V Minimum resolution(V): 0.1V Minimum resolution(A): 0.01A Display color: Red and Blue (two-color display) Measure accuracy: 1% Dual Led 0.28 ” Display for DC0-100V 100A Voltage and Current Test Digital Instrument, Digital Meter Panel Amplifier Red Blue 100A

Reference: RBD-2324

Brand: DFRobot

Gravity Analog ORP Sensor Meter for Arduino

Gravity Analog ORP Sensor Meter for Arduino with a compact and easy-to-use design Measures Oxidation-Reduction Potential (ORP) in aqueous solutions within -2000mV to 2000mV range Features simple wiring and programming for seamless integration with Arduino Provides reliable water quality measurements for testing, aquaculture, and hydroponics Includes ORP...

Reference: RBD-2667

MG811 (Co2) Carbon Dioxide Gas Sensor

2 reviews

MG811 (CO2) Carbon Dioxide Gas Sensor Metal Oxide Sensor Highly sensitive to CO2 Less sensitive to alcohol and CO Analog and digital output options Compatible with Arduino & Raspberry Pi Wide detecting scope

Reference: RBD-2704

Voltage To Current Module 0-5V to 4-20MA Conversion Sensor Module

Convert voltage signals (0-5V) to industry-standard current signals (4-20mA) for control systems. Isolated design ensures safe operation and minimizes electrical noise interference. Wide operating voltage range (12-24V) for compatibility with various power supplies. Easy to use with clear LED indicators and simple connections.

Reference: RBD-2729

SGP41 Air Quality Digital TVOC Detection Sensor

1 review

The SGP41 from Sensirion is an innovative VOC and NOx sensor engineered to serve as a digital smart switch and regulation unit in air treatment systems like air purifiers. Utilizing Sensirion's advanced Gas Index Algorithm, the sensor accurately processes two distinct signals, enabling automatic triggering of air treatment devices for the removal of...

Reference: RBD-2735

INA219 DC Current Measurement Module

4 reviews

Measures high-side current and voltage up to 3.2A @ 26VDC.

Reference: RBD-2493

Brand: DFRobot

Gravity Analog Electrical Conductivity Sensor V2 K1

Brand: DFRobot Product: Gravity Lab Grade Analog Electrical Conductivity Sensor Supply Voltage: 3.0~5.0V Output Voltage: 0~3.4V Support Detection Range: 0~20ms/cm

Reference: RBD-2730

SGP40 Air Quality Digital TVOC Detection Sensor

1 review

The SGP40 is a digital gas sensor designed for easy integration into air purifiers or demand-controlled ventilation systems. Sensirion’s CMOSens® technology offers a complete, easy-to-use sensor system on a single chip featuring a digital I2C interface and a temperature-controlled micro hotplate, providing a humiditycompensated VOC based indoor air...

Reference: RBD-2748

Reset / Enable Controller - KA75330 3.3V Voltage Detector

A voltage detector is handy for projects where you want to make sure your microcontroller doesn't run at a low voltage. For example, say you have a Feather Huzzah running on a lipoly battery every few minutes. Eventually, the battery runs down and goes below 3.3V, so the voltage to the ESP8266 core is too low, and could cause a lockup or corrupted data....

Reference: RBD-2793

Ultrasonic oxygen sensor OCS-3F

Cost-Effective Oxygen Detection Dual Detection Reliable Performance Versatile Outputs Compact & Easy to Use *Not a medical device*

Reference: RBD-2938

Brand: DFRobot

Soil NPK Measure Sensor MODBUS-RTU RS485 (IP68, 5-30V)

If you're looking to work with an NPK sensor, you'll quickly notice that most options come with either Chinese-only documentation or limited support, making them difficult for beginners. That's where the DFRobot NPK Sensor stands out — it offers extensive documentation and sample code, making it far more accessible. By using the DFRobot Modbus/RS485...

Reference: RBD-3109

PZEM-004T AC Multi-function Electric Energy Metering Power Monitor with Closed CT

1 review

Model: PZEM-004T Operating Voltage: 80-260VAC Test Voltage: 80-260VAC Rated Current: 100A Rated power: 100A / 22000W Operating frequency: 45-65Hz Measurement accuracy: 1.0Random: Variants May Include Old or New Capacitor

Reference: RBD-2794

Ultrasonic oxygen sensor OCS-3F with LCD and Power Supply

All-in-one Oxygen Monitoring: This complete kit combines the OCS-3F ultrasonic sensor with an LCD display and power supply for convenient oxygen concentration and flow rate monitoring. Enhanced User Experience: The large LCD screen displays real-time oxygen concentration (21% - 95.6%), flow rate (up to 20 L/min), and room temperature for clear and easy...

Reference: RBD-2972

Square 10M Float Switch - Industry Pump Tank Sensor Imported

Automatic On/Off control for pumps, motors, and valves. Rated for 250V at 10(8A) and 380V at 10(4A). 10-meter wire length with IP68 protection. Suitable for non-flammable liquids; not explosion-proof. High buoyancy and hermetically sealed for reliable operation.

Reference: RBD-3110

PZEM-004T AC Multi-function Electric Energy Metering Power Monitor with Open CT

2 reviews

Model: PZEM-004T Operating Voltage: 80-260VAC Test Voltage: 80-260VAC Rated Current: 100A Rated power: 100A / 22000W Operating frequency: 45-65Hz Measurement accuracy: 1.0Random: Variants May Include Old or New Capacitor

Reference: RBD-2835

Explosive Gas Sensor Figaro TGS813-A00 Original

The sensor has high sensitivity to gases such as methane, propane, butane and hydrogen. The supply voltage is 24 V. Measuring range is up to 10,000 ppm.

Reference: RBD-2974

Square 6M Float Switch - Industry Pump Tank Sensor Imported

Automatic On/Off control for pumps, motors, and valves. Rated for 250V at 10(8A) and 380V at 10(4A). 6-meter wire length with IP68 protection. Suitable for non-flammable liquids; not explosion-proof. High buoyancy and hermetically sealed for reliable operation.

Reference: RBD-3278

INA226 Voltage Current Power Monitoring Module

2 reviews

The INA226 Voltage Current Power Monitoring Module is a high-precision I²C-based sensor designed for real-time voltage, current, and power measurements in electronic circuits. With its high 16-bit ADC resolution, this module ensures accurate and reliable monitoring of power consumption, making it an essential tool for engineers, hobbyists, and...