LinkMejor Lighted Wired Doorbell Button, Metal Wall Mount Push Button, Black

Features: Solid and gloss metal push buttonBright LED LightTolerance temperature: -4 degrees Fahrenheit to 240 degrees FahrenheitWaterproof and safeSpecifications: Color: matte blackSize: 3 inchPackage includes: 1 x Doorbell button2 x ScrewsNotes: If you use a digital ringtone (play the melody. Speakers with sound), diodes are required (not included). If you are using a mechanical doorbell (2 note sound. Like a mallet hitting a metal bar), no diode is needed.