The DUAL R3 Lite is a Module of Dual Smart Switch with Relays controllable by WiFi, through mobile devices such as smartphones or tablets, but they can also be controlled with voice commands through Siri or other virtual assistants such as Alexa or Google Assistant. This Smart Switch was designed to be installed behind switches, in a junction box or on a DIN rail and allows you to remotely control (via WiFi) your lights, blinds or other electrical devices.
With this GSM Module, you can control devices by sending SMS messages. It is controlled via AT commands and can be integrated with your Arduino projects. Designed for the global market, modules based on the SIM900A feature the GSM/GPRS bands of EGSM 900MHZ and DCs 1800MHz.
The HC-12 433MHz Transceiver is a wireless communication Module, which is based on the RF SI4463 chip, has a built-in microcontroller and can be configured by AT commands, the maximum output power is 100mW (20dBm) and the receiver sensitivity differs from: 117dBm to -100dBm, depending on the transmission speed. Accepts 3.2V - 5.5V and can be used with 3.3V and 5V UART voltage devices.
