19mm Metal Latching Push Button Switch 12V 24V ON Off 1NO 1NC 5 Pin Waterproof Item dimensions L x W x H: 0.86 x 0.86 x 1.38 inches Latching Operation: Press the button to turn ON; press it again to turn OFF. Electrical life: 100,000 cycles. Mechanical life: 500,000 cycles. Mounting Hole: 19mm (3/4"). Structure: 1NO 1NC. LED Indicator: 5A, 12-24V, with a white power symbol. LED lifespan: 40,000 hours. Four wiring configurations are available: Normally Open or Normally Closed. The LED can be set to remain constantly illuminated or to light up only when the device is active. Connection is facilitated by five brass terminals on a wire socket, eliminating the need for soldering and simplifying installation. Protection Rating: IP66 for water and dust resistance, and IK09 for anti-vandal rating. Suitable for use in damp or dusty environments. Do not submerge the push button switch in water. Wide Range of Applications: Compatible with automotive, computer, instrumentation, doorbell, household appliance, and related industries.