This is a sound booster for electric bikes or motorcycles.
WhatsApp: 085772669137
Shopee: https://s.shopee.co.id/AKIG2oGvBN
Installation:
There are 3 wires: red, black, and green.
The red and black wires are rated for 12 to 24 volts, no more.
The green wire is for the throttle. The throttle voltage on the molis or selis is usually at least 0.8 volts before the throttle is applied, and once the throttle is applied, it increases to 5 volts.