Maximum relay output: DC 30V / 10A, AC 250V / 10A 2-channel relay module with optocoupler Triger LOW Level expansion card compatible with arduino Standard interface directly controllable by microcontroller (8051, AVR, * PIC, DSP, ARM, ARM, MSP430, TTL logic) High quality bulk music relay, SPDT relay. A common terminal, a normally open terminal, a normally closed terminal isolation by optocoupler, good anti-jamming
