5-24v DC OR 240v AC Power LED 
It is an IP65 rated product.
12mm: 1amp,16mm : 4.5amp, 19mm: 7.5amp, 22mm: 10amp loading capacity.
12mm: 4pin(C,NO,LED+,LED-), 16, 19 and 22 mm :5 pin = 1 -LED +,1 – LED -, 1 – COM, 1 – NO, 1 – NC.
High Quality Stainless Steel Material.
Yanwev Pvt. Ltd. Product By South Korea.
3 month replacement Guarantee.
Mounting Hole Diameter 12mm, 16mm, 19mm, 22mm as your selection.
Tested for more than 30,000 presses.
Stainless steel material for long period use.
In-built illuminated LED.
Independent LED and Switch Terminals.
Good Electrical Conductivity.
Rubber ring and nut for fixing, Waterproof and dustproof.
NOTE :- Momentary means Horn type switch which works as it will be in ON position till you press it and will auto-reset itself as soon as you release it.