HOBO* TidbiT Wireless Temperature Data Logger, compact, waterproof up to 1500m (5000 feet), features wireless setup and download via Bluetooth Low Energy (BLE) and has a large memory that stores 96,000 measurements, +/- 0.2 deg C (+/-0.36 deg F) accuracy
Go Direct* Optical Dissolved Oxygen Probe, with Micro USB Cable, Range: 0 to 20 mg/L, 0 to 300%, Measure primary productivity or biological/biochemical oxygen demand, Explore the interdependence of plants and animals, Monitor watersheds over time
Altimeter three Smart Phone partner, is a flight altitude recorder that is controlled by your smartphone or iPad or Android tablet, includes a recharging cable, and can be recharged from any USB port. Size: 49mm x 18mm x 14.5mm (1.9″ x 0.7″ x 0.57″)
Go Wireless* Heart Rate sensors, ideal for continuously monitoring heart rate before, during, and after exercise or while a person is stationary, Recommended for College, High School, and Middle School Science