1Sheeld+ for iOS and Android - Multi-Platform 240x320 Operating temperature: -25°C to 85°C

Operating temperature: -25°C to 85°C

1 × screw shield

It is designed to measure pulse

This is Φ3mm 20mm Hollo Hexagon Copper Cylinder

make sure you check the following

1Sheeld+ for iOS and Android - Multi-Platform 240x320 Operating temperature: -25°C to 85°C1Sheeld+ for iOS and Android 1Sheeld+ is a "Bluetooth LE Tethered" shield for Arduino. Plug it into your Arduino and then run the matching mobile app on your tablet or phone. Once paired, the mobile app that allows the usage of all your smartphones' capabilities such as LCD Screen, Gyroscope, Switches, LEDs, Accelerometer, Magnetometer, GSM, Wi Fi, GPS, etc. into your Arduino sketch. The 1Sheeld+ works with iOS as well as Android! The first part is a