It's able to lock after press button,and able to return after the button according to arrow direction,contact reliable.

Rating :0.5A  250V  AC  or 1A  30V  DC

           2.5A,  250V   AC or 3A 30V   DC

Dielectric strength (AC); 1000V/2000V

Contact Resistance:  ≤20mΩ

Electrical Life (cycles): 50000(0.5A)

                                  20000(2.5A)

Insulatio Resistance:   ≥1000MΩ

Ambient Temperature:  --40~+55oC