Arduino 4 Channel Relay Module BoardThis is a 5V 4 channel relay interface board, and each channel needs a 15 20mA driver current. This 4 way RELAY MODULE can be used to control various appliances and equipment with large current. This four channel relay module is equipped with high current relays that work under AC250V 10A or DC30V 10A. 5 volts relay driver module has a standard interface that can be controlled directly by the microcontroller. This relay module board allows a wide

Integrated 802

Input voltage - 7-15V

RPL Jumper: loop mode control

such as voice encoding

With its high-quality components and powerful performance

Prototype your circuits with ease using this high-quality 6

Support TF card

5cm x 6cm x 1

Efficiency: Up to 96%

the PCF8574 expanded to 64 I / O and its typical application are I / O resource shortage MCU I / O expansion

Input Voltage (limits) : 6-20 V

allows the Raspberry Pi Camera or Camera Noir to be fitted neatly inside it)