We specialize in switches, push button switches, indicator light,signal light, LED lamp,waring horn,buzzer...... Name:Indicator light,signal lamp,LED lamp,warning horn,buzzer ... temperature: -25 ~ 55°C4) Relative humidity: 98%5) Vibration frequency: 2 - 80Hz6) Pollution class: III7) Meets IEC60947-5-1, EN60947-5 ...