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The board has only one  relay driven by TTL circuit . The board works on 5V but the input signal can come directly from Raspberry Pi and Arduino  output working at 5V to control relays. Each relay can switch varierty of AC or DC high voltage, high current loads working at 110V or 220V AC mains like lights, fans, motors and such. The status of relay is indicated by individual LEDs.

 Order Code : RDL/5RR/13/001/V1.0

The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM35 thus has an advantage over linear temperature sensors calibrated in ° Kelvin, as the user is not required to subtract a large constant voltage from its output to obtain convenient Centigrade scaling. The LM35's low output impedance, linear output, and precise inherent calibration make interfacing to readout or control circuitry especially easy. 

ORDER CODE: RDL689

This is a low frequency (125Khz) RFID Reader With serial Output with range 0-10cms. The RFID Reader  is designed specifically for low-frequency (125 kHz) passive tags.Frequency refers to the size of the radio waves used to communicate between the RFID system components.

Order Code :RDL/RFS/15/001/V1.0

RPI 4 loT Development Trainer Kit essential development features a plug - and - play design that makes it easy for connections and helps Students, hobbyists, enthusiasts and professionals to focus more on Program/application development. RPI 4 loT Trainer Kit equipped with onboard IO's, communication interfaces & peripherals. It is really easy to design, experiment with, and test circuits without soldering. It's used in many educational institutions and R&D LAB across the world..

ORDER CODE: RDL922

Biomedical Sensor interface Trainer Kit, the plug-and-play design that makes it easy for connections and helps Students, hobbyists, enthusiasts and professionals to make custom biomedical application projects. Biomedical Sensor interface Trainer Kit equipped with onboard IO’s, Temperature, SPO2, Heart Rate sensor, ECG, EMG sensors interfaces and peripherals. It’s used in many educational institutions and R&D labs across the world.

ORDER CODE: RDL886

Industrial grade Analog to 4-20 mA current Loop Transmitter is very much useful device to control the valve, VFD, Test systems and sensor output conversion (Voltage to current). They provide accurate current scaling and output current limit functions.

Order Code: RDL900

The series is a custom-designed power modules with high efficiency and small volume,made by Hi-link Electronics company.It has been widely used in smart home, automation and control,communications equipment, instrumentation And other industries.

ORDER CODE: RDL750