2CH 10A Flush-mounted Switch Actuator, Input Voltage:AC100-240V, 50/60Hz), 2CH, 10A/CH relay output, 4CH dry contact input, 4CH LED output, 12mA/CH, long press the button to control all the relay channels on/off, With scene control, staircase light control, delay control functions,Must be work with Auxiliary Power input DC20-30V