3units! 2 Channel DC 5V Relay Switch Board Module, for Arduino Rberry Pi PIC ARM UNO 1 GHz base frequency

1 GHz base frequency

Full HD (1920 x 1080)

11 a/b/g/n/ac Wi-Fi + Bluetooth

5-inch 4K) and: One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors

3units! 2 Channel DC 5V Relay Switch Board Module, for Arduino Rberry Pi PIC ARM UNO 1 GHz base frequency3 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