1.58K viewsApril 26, 2017 invisiblefly (anonymous) April 26, 2017 0 Comments does it has built-in buzzer? or i need to install my own or even add solenoid option. Add a Comment 1 Answer ActiveNewestOldest admin1.47K Posted April 26, 2017 0 Comments Buzzers and solenoids you’d have to source elsewhere. The xwhatsit controller supports buzzers directly and some types of solenoids through the solenoid driver add on board. DT/GH/ebay user Orihalcon may have some extras of these parts. Add a Comment Write your answer.