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The board has four relays driven by ULN2003 IC. The board works on 12V but the input signal can come directly from microcontroller output working at 3V or 5V to control relays. Each relay can switch variety 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.
We are offering our valuable clients a highly durable and precision engineered range of PCB (RELAY-4-A) that offer excellent performance and durability. Offered at highly competitive prices that can be customized as per clients’ needs, this product is fabricated using advanced technology and quality proved material. Its fabrication according to the international quality standards ensures its reliability.
Specifications:
12v DC
ULN 2003 driver provision
LEDs for output indications
Diodes preventing back emf
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Boduppal, Hyderabad, Telangana 
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