1This product is a waterproof button box for button stations such as 2way cranes and rolling door controls. 2According to the arrow, press up and down, keep pressing the button to open, and release the button to stop. 3The waterproof grade is IP32, and the product performance is waterproof, dustproof and anticorrosive. 4Momentary action type, fast connection, black and white sign button switch station. 5It is widely used to control automatic control circuits such as electromagnetic starters, contactors, relays, etc. Item Type: Waterproof Button Box Product Material: ABS Shell Product Model: SGKJ-2N Product Performance: Waterproof, Dustproof, Anti corrosion Use Scenario: Industrial Control Field Working Current: 10 (8) A Working Voltage: AC 400V~ (Means Common Below 400V) Waterproof Rating: IP32 Product Size: Approx. 10.5x6.6x6cm / 4.1x2.6x2.4in 1 x Switch Please allow 0‑2cm / 00.8in error due to manual measurement. Thanks for your understanding.