Go Direct* Photogate, double-gate sensor that includes two photogates built into the arms of the sensor, which accurately measures velocity and acceleration, Infrared source: Peak at 880 nm, Gate width: 77.5 mm, Battery: 300 mAh Li-Poly Rechargeable
Go Direct* Ammonium Ion-Selective Electrode, Range: 1 to 18,000 mg/L, 2-7 PH, 0.1 to 5 M omega Electrode resistance, 300 mA Li-Poly Battery, 500full charge cycles (several years depending on usage)Battery life, connects via Bluetooth* wireless technology
Go Direct* Tris-Compatible Flat pH User Manual, used for any lab or demonstration that can be done with a traditional pH meter, including acid-base titrations, monitoring pH in an aquarium, and investigating the water quality of streams and lakes
Go Direct pH Electrode, Type: Sealed, gel-filled epoxy body, Ag/AgCl, 12 mm outer diameter, Range: pH 0-14, Isopotential pH: pH 7, Temperature Range: 5 to 80°C, Response Time: 90% of final reading in 1 second
Energy Sensor, offers an easy way to quantify voltage, current, power, and energy output of small wind turbines and solar panels, measures the current and voltage of the system. Data-collection and analysis software