The DFRobot Relay Module is a standard relay used with a controller board to interface external electrical circuits or modules. Some of the most common applications with Arduino are: Home lighting, electrical appliances of high power and other equipments. The modular design makes it easy to integrate with a controller board. The Relay integrates a status LED, in order to acknowledge visually it's status ON or OFF. It can be controlled through the digital IO port, with a simple HIGH or LOW on Arduino compatible boards. Other boards will work requiring same voltage level. Other usages include control of solenoid valves, lamps, motors and other high current or high voltage devices.

Latest Update: V3.1

• Improved the silkscreen on the bottom layer of the sensor to indicate the hardware connection.
• Some kits may include acrylic holder and nylon screw set to prevent shorting of high power interface with metalic surface.

• Single relay board
• Rated through-current: 10A (NO) 5A (NC)
• Maximum switching voltage: 150VAC 24VDC
• Interface: Digital
• Control signal: TTL level
• Contact Rating (Res. Load): 10A 250VAC / 24VDC
• Max. switching voltage 250VAC / 30VDC
• Max. switching current 15A
• Max. switching power 250VA 240W 
• UL Rating: 10A 120VAC / 10A 250VAC
• Operate time (at nomi. Vot.): 10ms
• Release time (at nomi. Vot.): 5ms
• High quality connector
• Immersion gold surface

• 1 Arduino
• 1 Xboard
• 1 FTDI programmer
• 1 Relay
• 1 CAT5 cable
• 1 pair of xbee modules
• 1 computer
• 1 Internet router
• hookup wire

Project 4. Application Tutorials of FireBeetle Board - ESP32 BLE: Smarten a Plugboard

What you have seen is a smart plugboard that converted by ESP32 master board and controlled by BLE of ESP32.

Hardware in need:

• USB Power Supply Wall Adapter 5V@2.5A (EU Standard)
• FireBeetle ESP32 IOT Microcontroller (Supports Wi-Fi & Bluetooth)
• FireBeetle Covers-Gravity I/O Expansion Shield
• FireBeetle Covers-Proto Board
• Gravity: Digital 5A Relay Module
• Beetle BLE
• Button
• 8Crust printed by 3D printer

• Wiki (Relay Module (Arduino Compatible))
• Datasheet
• Schematic
• How to use relay tutorial 

• Gravity Relay Module V3.1 x1
• Digital  Cable  x1