• Control line: 20mA
• Control signal: 5V / 12V / 24V TTL
• Maximum switching voltage: 250VAC, 30VDC
• Size: 51mm * 75mm * 15mm

This is a 4 relay module circuit. The circuit can be used to control lights, fans or other electrical devices. Circuits are designed to easily combine with PIC, AVR, ARM, Arduino microcontroller circuits. The circuit supports 4 inputs 5V, 12V or 24V relay. A domino output with a normally closed contact and a normally open contact for each output.