... locked 2)Basic install diameter:22mm 3)pack:white box,kraft box,carton 4)Certificate:CE,CCC ... resetSB2-BD45 NO+NC 2 position resetSB2-BD53 NO+NO 3 position resetRemark:BD series is long handle pushbutton TypeContact ... ,telecommunication, machinery, marine, textile, printing, miningindustrial equipment , and etc 3. Working EnvironmentAmbient air temperature -25°c~ +40°cAltitude: ≤2000mRelative air ...