APL-511N rotary valve feedback means C stage of high-grade mechanical explosion hazardous areas provides a high performance and reliable products, valve signal transmission in hazardous areas to provide a safe and secure products, products have a number of authoritative international certification body awarded ATEX, Exd, dust proof (DIPA20 TA, T6) Explosion-proof, no magnesium die-cast aluminum housing, making our products more secure and reliable ..... mounting bracket: Optional iron and stainless steel S A's. Housing Material: die-cast magnesium-aluminum colors: black, gray, yellow, red, blue, green. But usually choose black indicator: the dome, flattened explosion-proof certification: aluminum flameproof EXDIICT6, dust-proof DIP A20 TA, T6. Built-in sensor characteristics: mechanical 2SPDT, SPDT, Honeywell Micro Switch HONEYWELL, dry contact, passive switch, passive contact Ambient temperature: -25 ~ 85 ℃, there can be -40 ~ 120 ℃ election Protection: IP67 Brand: Eifel Trademark: Aphe Packing: Carton