KidWind High Torque Generator with Wires, High Torque Generator produces lower voltage but higher current for a given rotor speed, Recommended for College and High School
InTemp* VFC Temperature Data Logger with 6.6' probe & 30 ml bottle, -40 deg to 100 deg C, Wireless Data Standard: Bluetooth Low Energy, Radio Power: 1 mW (0 dBm), Battery Type: Two AAA 1.5 V alkaline or lithium batt