5V ESP8266 WiFi Relay Module 37 in 1 Sensors Kit for Arduino Water Level Monitor: Place the

Water Level Monitor: Place the sensor above a tank to measure water level without contact and trigger alerts or pump control

Fan-Ready Design: Can be paired with optional 40mm cooling fans for active cooling in extreme temperature environments or high-performance overclocking scenarios

Periodically disassemble and clean

so active cooling is typically necessary only in extreme ambient temperature conditions or for maximum sustained performance in continuous operation scenarios

Regenerative Braking Capability: Recovers kinetic energy during deceleration and feeds it back to the battery

5V ESP8266 WiFi Relay Module 37 in 1 Sensors Kit for Arduino Water Level Monitor: Place the```html 5V ESP8266 WiFi Relay Module Control any AC or DC appliance remotely over WiFi with this compact 5V ESP8266 WiFi Relay Module. Combining the powerful ESP 01 WiFi microcontroller with a robust 10A relay, this all in one board lets you switch lights, fans, motors, solenoids, and more from a smartphone, web browser, or cloud platform no additional microcontroller required. Ideal for home automation, IoT prototyping, and smart switching projects.