3units! 2 Channel DC 5V Relay Switch Board Module, for Arduino Rberry Pi PIC ARM Sensors runs perfectly on programming software

runs perfectly on programming software

the ESP8266-D1 will appear as a standard serial COM port

·       Integrated Fingerprint Scanner

Connect to what you love: Navigate congested workspaces with ease with a range of wireless options

256GB or 512GB solid-state drive (SATA) - your choice

3units! 2 Channel DC 5V Relay Switch Board Module, for Arduino Rberry Pi PIC ARM Sensors runs perfectly on programming software3 units! 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino 2 channels These relays work great, genuine work horses, with SMD optocoupler isolation, and very stable performance. It can be used as a microcontroller development board module, or as home appliance control. Normally open interface and can be set to high or low triggered by jumper. Maximum load: AC 250V 10A, DC 30V 10A. Trigger current: 5mA Fail safe design, even