GB5-AG21 CNGAD GB5 series black 2-position 1NO key switch 

 Application and main technical parameters
1) Operational Voltage: No exceed than 380AC or no exceed than 220DC 
2) Operational temperation: -25 to +70 
3)Operational humidity: 45% to 90%
4) power-frequency withstand voltage: 2500V AC, 1min
5) contact resistance: ≤ 50mΩ
6) Mechanical durability: Monentary 1000, 000, maintained 250, 000 
7)Electrical durability: 500, 000
8) Protection grade: IP65, IP67 with cover
9)Certificate: CCC, CE