Check the listing for details. Key Switch Door Release Switches SPST for Access Control w DC 12V Red Indicator. Color: Black, Condition: New, Made in China. Listed at 24.98 USD. Description:-This key switch is an emergency switch button with a special mechanical key for emergency situations.-Exit switches come in handy when one wants to regulate the comings and goings of people.-19mm key switch lock with 2 keys, nice smooth action and easy to mount.-Key is removable in both ON and OFF positions.-The indicator would not light off when turning on or off the switch.-Anti-disassembly signal output. Specification:Panel Material: 304 Stainless SteelSwitch Rated Power: 4A 125V AC / 2A 250V ACIndicator Rated Voltage: DC 12VType: SPSTContacts Type: 1 NO, 1 NC, 1 COM, 2 TAMPPanel Size: 86 x 86mm / 3.39" x 3.39" (L*W)Mounting Cut Hole: 54 x 36mm / 2.13" x 1.42" (L*W)Panel Mounting Hole Diameter: 4.5mm / 0.18"Panel Mounting Hole Distance: 60mm / 2.