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The Voltage Detection Sensor Module 25V allows you to use the analog input of a microcontroller to monitor voltages much higher than it capable of sensing
ease of use
A Green LED( Light-Emitting Diode) is a semiconductor light source which can create green lighting
The DT830D Multimeter is more than just a testing tool
To measure temperatures
Witty Cloud (163) Limit Switch The Voltage Detection Sensor ModuleWitty Cloud ESP12F ESP8266 Serial WiFi Development Board (Mini Node MCU Module) The ESP8266 ESP 12F Module Serial WIFI Witty Cloud Development Board + MINI nodeMCU is a cheap and small Wifi transceiver, a perfect solution for Home Automation and IoT applications. It can be the replacement for your NRF24L01, it can talk to your Wifi router directly through the UART MCUs (Rx, Tx). The upper board is the main board which consists of an ESP 12F module
US$ 19.00
US$ 118.00
US$ 19.00
US$ 116.34