Contact arrangement available in choice of single pole double throw (SPDT) or single pole single throw (SPST), either normally open (NO) or normally closed (NC).

• 联络安排，可在选择单极双掷（ SPDT产品技术）或单极单掷（的SPST ） ，无论是通常开放（无）或常闭（ NC ）进行。