{"title":"Devicter Relay 1 Node V1.0 (ATmega 328) – with support OTA update","handle":"devicter-relay-1-node-v1-0-atmega-328-with-support-ota-update","url":"/products/devicter-relay-1-node-v1-0-atmega-328-with-support-ota-update","description":"The devDuino Relay 1 Node V1.0 is a compact Arduino-compatible microcontroller board with a built-in mains power supply (110–220 V AC), a 10 A relay, and an nRF24L01+ wireless transceiver. It is designed for building wireless home automation networks with support for over-the-air (OTA) firmware updates and data encryption.\n\nThe board includes an integrated ACS712 current sensor (20 A), on-board SPI flash for OTA updates, an ATSHA204A encryption chip, and GROVE-compatible connectors for easy sensor expansion. It runs the UNO Optiboot bootloader and can be programmed via a standard FTDI header.\n\nKey Features\n\n\nArduino Compatible – ATmega 328 with UNO Optiboot bootloader\n\nnRF24L01+ Transceiver – Built-in wireless for sensor network communication\n\n10 A Relay – On-board relay for mains switching\n\nACS712 Current Sensor – Integrated 20 A current measurement\n\nOTA Firmware Updates – 64 KB on-board SPI flash/EEPROM\n\nData Encryption – ATSHA204A security chip\n\nMains Powered – Built-in 110–220 V AC power supply\n\nGROVE Connectors – 1× I2C, 1× 2-pin digital\n\n\nSpecifications\n\n\nMicrocontroller: ATmega 328\n\nBootloader: UNO Optiboot\n\nClock Frequency: 16 MHz\n\nWireless: nRF24L01+ (mini)\n\nRelay Rating: 10 A\n\nCurrent Sensor: ACS712, 20 A\n\nFlash (OTA): 64 KB SPI\n\nEncryption: ATSHA204A\n\nPower Supply: 110–220 V AC\n\nProgramming: FTDI header, ICSP header\n\nExpansion: 2× GROVE connectors (I2C, digital), DS18B20 temperature sensor header\n\nLEDs: 3 (user, power, relay)\n\nDimensions: 32 mm × 68.5 mm\n\n\n\nWarning: This board connects directly to mains voltage (110–220 V AC). Installation should only be performed by qualified personnel. Ensure the board is fully enclosed before powering on.\n\n\nIdeal For\n\nWireless home automation and smart switches\nRemote monitoring with nRF24L01+ sensor networks\nSmart thermostats and relay control\nCurrent monitoring for mains appliances\n\n\nPackage Contents\n\n1× devDuino Relay 1 Node V1.0 (ATmega 328)\n","vendor":"Elecrow","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":4029,"title":"Default Title","sku":"EC-CDD10240D","price":48.75,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}