ESP8266 WiFi 4 Relay Module (5V) Components Box (Small) An AND Gate is a

An AND Gate is a logical operator/circuit that gives a logical high (1) output only when all of its inputs are high (1)

And any where where water/air is need to be controlled by solenoid valve

TIP126 is a silicon PNP Darlington Bipolar Power Transistor is designed for general-purpose amplifier and low-speed switching applications

3V and 5V operating voltages

ESP8266 WiFi 4 Relay Module (5V) Components Box (Small) An AND Gate is aIntroduction : ESP8266 WIFI 4 Channel Relay Module is 4 channel WIFI relay module carried a ESP8266 WIFI module and mature 8 bit MCU, with Professional switching power supply circuit. It could control the relay by Android phone APP within the local area network Transmission distance 1) the open environment, the mobile phone when carrying on the WIFI module maximum transmission distance of 100 m; (2), when the WiFI module and cell phone carrying on the