8-CH 12V ULN2003 Based Relay Board

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8-CH 12V ULN2003 Based Relay Board

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Description: 1. The 8-CH 12V ULN2003 Based Relay Board is an expandable IoT component designed to operate eight relay switches, each capable of handling up to 12V DC and 500mA maximum current. 2. Relay Switches: Each relay switch functions as a normally open (NO) electrical contact that can be electronically controlled via digital inputs. This makes it ideal for managing power to external devices or appliances. 3. ULN2003 ICs: The board utilizes the ULN2003 Darlington array integrated circuits, which enable the control of inductive loads while ensuring protection against voltage spikes and back EMF that may damage the controlling electronics. 4. Input Voltage: This IoT component accepts a 5V DC input voltage, making it compatible with various microcontroller and single-board computer platforms like Arduino, Raspberry Pi, etc. 5. Opto-Isolated Inputs: The relay board features opto-isolated inputs which provide galvanic isolation between the control circuitry and the switching contact, ensuring

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Specification	Details
Voltage Rating	12V DC
Number of Channels	8 Relay Channels
Relay Type	ULN2003 ( Darlington Transistor Array)
Load Capacity	Up to 250V 10A (Resistive Load)
Operating Temperature	-20°C to +60°C
Dimensions	Approx. 5.8cm x 4.2cm x 1.3cm
Weight	Approx. 50g
PCB Material	FR-4 (Flame Retardant High-Quality)