Features: Bright LED light Tolerance temperature: -4 to 240 degrees fahrenheit Antique design Waterproof design Specifications: Material: solid metal Led Color: cool white Size: 2.5 inch Package includes: 1 x Doorbell button 2 x Screws Notes: If you use a digital ringtone (play the melody. Speakers with sound), diodes are required (not included). If you are using a mechanical doorbell ring (2 note sound. Like a mallet hitting a metal bar), no diode is needed Small parts included, please keep them away from little kids to avoid swallowing risk