Production Name: Push Button Switch, Module Name: KAO-5H, Rate Current: ITH 10A 120/220/230/380V,Function: Green Button for Motor Start, Self Locked, Red Button for Motor StopSurface waterproof and dustproof, Stop button prior to Start button,Concise design for motor start stop control. Advise indoor useSlim and rectangle box design can be installed conveniently beside your operating machine as built one work shop.Inside contact points are copper alloy, keep perfect electrical performance,very durable and long life time.1 year warranty and widely used in lathe, grinder, driller and other fixed power tools Module Name: KAO-5H Rated Current: ITH 10A 120/220/230/380V AC Button Function: Green for motor start, Red for motor stop Button Locked Type: Self-Locked Total Size: 90 x 56 x 62mm / 3.54 x 2.20 x 2.44in Bottom Install Hole: 4 Holes, Diameter 5mm / 0.2in Install Hole Center Level Distance: 35mm / 1.38in Install Hole Vertical Distance: 68mm / 2.68in Net Weight: 125g /4.41oz Package Content: 1 x Push Button Surface waterpoof and dustproof, very suitable for machining machine such as table saw, lathe, power tools because operators' glooves will bring some dust or oil on surface of button Box base is not waterproof, advise to use indoor or inside space where water can not enter Wiring shown in pictures for 1 , 2, 3 phase motors, easy for you to install Kindly Notice to You From May 2019 new batch will add 3 wire hole plugs with this switch free, as some customer feed back that wire holes only use 1 or 2, Non-used hole should be seal with plug to provent dust enter inside