LED1, R1, R2 and R3 are optional and can be installed when you want the “Low Battery Energy Reminder†feature. R5 should be mounted, as with R4, both pull-up and pull-down resistors - the PCB in version 1.2 has two reserved positions.
Solid-state Capacitors / Motor Starting Capacitors
Solid - state capacitors are all called: solid - state Aluminum Electrolytic Capacitors.It with the ordinary capacitance (that is, the liquid aluminum electrolytic capacitors) the biggest difference is that use different dielectric material, liquid aluminum capacitor dielectric material as the electrolyte, and solid-state capacitor dielectric material is conductive polymer materials.Solid-state capacitors / Motor starting capacitors
Solid-state capacitors，Motor starting capacitors,Solid-State Capacitors,Solid-State Small Size Capacitors,Solid-State Low Impedance Capacitors,Long Life Solid-State Capacitors
YANGZHOU POSITIONING TECH CO., LTD. , https://www.cnchipmicro.com