FainWan 5pcs DC 5V 1 Channel Relay Module Interface Board Shield Low Level Trigger for SCM Household Appliance Control auspowers_batchfour Measurement: the white flag is

Measurement: the white flag is 3

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FainWan 5pcs DC 5V 1 Channel Relay Module Interface Board Shield Low Level Trigger for SCM Household Appliance Control auspowers_batchfour Measurement: the white flag isFainWan 5pcs DC 5V 1 Channel Relay Module Interface Board Shield Low Level Trigger for SCM Household Appliance Control Features: 1 This module conforms to the safety standard, the control area and the load area have isolation slot; 2 With power and relay instructions, pull in light, disconnect not bright; 3 When the signal input signal, the common end and the beginning will be open; 4 Can be used as MCU development board module, can be used as home