Connection Description: Red line connecting VCC (ramps of +) Connect the black wire GND (ramps of -) Green Line connection

30 rows of double 5-hole rows 4 power rails with positive/negative markings Mainly Compatible with: Arduino Package weight: 0.036 kg

Features: The module uses genuine quality relay, normally open interfaces Using SMD optocoupler isolation, driving ability, stable performance The module

Bracelet style,Charging and Data sync Beautiful and light,fashion design,also convenient to carry with Standard USB2.0 cable, Reliable and fast power