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Description: 1. Overview: This is a Four-Channel 12V ULN2003 Based Relay Board Module designed for controlling electrical appliances or circuits using low voltage signals. 2. Components: It utilizes the ULN2003 Darlington transistor array to provide opto-isolated and low voltage AC/DC relay control. Each channel can handle inductive loads up to 50V and 1A. 3. Features: This module includes four independently controlled channels, each with built-in diodes for flyback protection. It operates on a 12V DC power supply, with a recommended voltage range of 10.8V to 14V. 4. Ease of Use: The board offers simple and straightforward use via its screw terminal blocks, allowing easy wiring and connections to external circuits or appliances. 5. Opto-Isolation: Each channel provides opto-isolated control, making it suitable for applications where electrical isolation is necessary, ensuring the safety of both users and equipment from potential voltage surges or short circuits. 6. Versatility: This relay boa
| Specification | Details |
|---|---|
| Number of Channels | Four (4) |
| Relay Type | ULN2003 ( Darlington Arrangement) |
| Voltage Rating | 12V DC |
| Current Rating | 40A per Channel (Max) 15A per Channel (Typ) |
| Switching Time | 10ms |
| Operating Temperature | -20°C to +80°C |
| Dimensions | 7.5cm x 4.5cm x 1.8cm |
| Material | PCB with SMD Components |
| Connection Type | Screw Terminal Jumper Wires included |
| Power Consumption | Low (varies based on load) |
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