nRF51822 Bluetooth BLE 4.0 2.4GHz Wireless Module 1.2E This is a Aluminum Heat

This is a Aluminum Heat Sink is 47 x 40 x 15 mm (L x W x H) and can be used for a variety of Applications

Its Light Weight

Power switching

This 2 Channel 5 Volt Relay Module

It is possible to isolate each input and output from the system ground

nRF51822 Bluetooth BLE 4.0 2.4GHz Wireless Module 1.2E This is a Aluminum HeatThe Core51822 is a Bluetooth 4. 0 Low Energy 2. 4GHz RF SoC based wireless module designed for ULP (Ultra Low Power) wireless Applications. If you have a custom PCB design and want to add some Bluetooth Low Energy, this module is small and simple to use. Features Low energy 128 bit AES hardware encryption 8 bit ADC Applications Wearable devices Mobile phone accessories RFID labels Industrial control Home appliances Specification Model NRF51822 Version