Part Number:1 Welcome to my store , Hope you have a pleasant shopping trip! Description: This is a DIY kit for fun fabrication and assembly of music boxes, which can emit 16 interesting analog sound effects under your control. It is both an electronic kit and can be used as a doorbell or alarm. The control method is: manual coding+external coding.Parameter: 1>.Work Voltage:DC 5V 2>.Work Temperature:-25~85 3>.Work Humidity:5%~95%RH 4>.Size:48*42mmPackage List:1x DIY Soldering Music KitNotes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement. 16 Sounds: This DIY Kit Can Emit 16 Interesting Analog Sound Effects Under Your Control. Doorbell: It Is Both An Electronic Kit and Can Be Used as A Doorbell Or Alarm. Control Method: The Control Method Is Manual Coding and External Coding. Application: Suitable for school science projects, science clubs, science expositions, etc. SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied. See more product details 16 Sounds: This DIY Kit Can Emit 16 Interesting Analog Sound Effects Under Your Control. Doorbell: It Is Both An Electronic Kit and Can Be Used as A Doorbell Or Alarm. Control Method: The Control Method Is Manual Coding and External Coding. Application: Suitable for school science projects, science clubs, science expositions, etc. SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied.