Model 7034 Quantity 1 Color Blue Material Plastic + iron + PCB Specification 12V relay contact capacity and 10A / 250V with light coupling protection; 5V or 3.3V drive; Supports all SCM drive; Plate load power module don't need external power supply; The I/O port drive low level effective Features 16-channel relay module board Application Great for DIY project and other electronic products Other 12V 16-channel relay interface board and needs 3.3V / 5V driver voltage; Equipped with high-current relay AC 250V 10A; DC30V 10A; Standard interface that can be controlled directly by microcontroller (8051 AVR PIC PLCDSP ARM ARM MSP430 TTL logic); Indication LED for each Relay's Status; Low Level is useful for driving I/O; With LM2576 Power; With optocoupler isolation Packing List 1 x Relay module board