3units! 2 Channel DC 5V Relay Switch Board Module, for Arduino Rberry Pi PIC ARM Sensors Processor: Intel Core i7-8650U @

Processor:       Intel Core i7-8650U @ 1

This model is an upgrade from the lower precision HC-SR04

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

Intel Core i5-6300U 2

USBASP USBISP AVR Programmer Adapter 10 Pin Cable USB ATMEGA8 ATMEGA128

3units! 2 Channel DC 5V Relay Switch Board Module, for Arduino Rberry Pi PIC ARM Sensors Processor: Intel Core i7-8650U @3 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