The use of low-power Bluetooth is necessary. As we all know, the cost of human resources is getting higher and higher. Wireless makes it simple to deploy the products. However, power consumption has always been the biggest obstacle to wireless promotion. The emergence of low-power Bluetooth makes it possible. A coin battery can work for 2 years, 3 years, 5 years, or even longer. No need to change the battery frequently makes everything so easy.