Interfaces play a central role in STEM experimentation, and are among one of the most important purchases a science educator can make. This page contains a chart that compares the features, applications, and connectivity of our interfaces to help you choose your next interface with confidence.

AirLink SPARKlink Air SPARK LXi 550 Universal 850 Universal
PASPORT Ports 1 2 2 2 4
Built-in Temp and Voltage No Yes Yes No No
Analog Inputs 0 0 0 2 (±10 V, optional gain voltage 10x, 100x) 4 (±20 V, optional gain voltage 10x, 100x, 1000x)
Digital Inputs 0 0 0 2 4
Connects via USB Yes Yes Yes Yes Yes
Connects via Bluetooth Yes Yes Yes Yes No
Rechargeable battery for cordless operation Yes Yes Yes No (AC adapter only) No (AC adapter only)
Works with PASCO Capstone Software Yes Yes No Yes Yes
Works with SPARKvue Software Yes Yes Yes Yes No
Accepts PASPORT Sensors Yes Yes Yes Yes Yes
Accepts ScienceWorkshop Sensors No* No* No* Yes Yes
Maximum Sampling Rate Sensor-dependent <1000 Hz Sensor-dependent <1000 Hz Sensor-dependent <5000 Hz Up to 2 MHz on one channel 10 MHz on two channels simultaneously
Signal Generator N/A N/A N/A ±8 V, at 400 mA, DC to 100 kHz #1 ±15 V at 1 A, DC to 100 kHz
#2 & #3 ±10 V at 50 mA DC to 500 kHz, independent
Included Items USB Cable AC adapter, USB cable, fast response temperature probe, voltage probe AC adapter, USB cable, fast response temperature probe, voltage probe USB cable, power supply USB cable, power supply
Expansion Port No No No No 44-pin port with voltage outputs, analog inputs, and digital I/O channels
* The AirLink, SPARKlink Air, and SPARK LXi can accept most ScienceWorkshop sensors with the proper adapter, although they won’t have the same high maximum sample rates. One exception is the Sound Sensor (UI 5101), which is not recommended for use with an adapter.