Start typing to do your search



Low-power data-logger designed for indoor use by, or supervised by, a professional user.

The sq16 is our entry level logger with long battery life, making it ideal for portable and routine data logging applications. The logger can be started or stopped using the multi function button which displays logger status, this means a PC is not required to run the logger in situ. Store up to 250 million readings in the Squirrel’s onboard memory and up to 6 logger configurations. Use the SD Card memory slot for grabbing measured data in the field or use the SquirrelView app or software to download and export your data.

Easy to set up, use straight out of a box

  • Easy to use simple set-up and intuitive to use
  • Long battery life gives long life operation and portability
  • Tough casing and robust design ideal for environmental applications
  • Bluetooth and USB connectivity for multiple connection choices
  • SD memory card for ease of data transfer

Powerful performance meets your application needs

Portable monitoring, environmental applications, vehicle, and transport applications, and general industrial monitoring.


No of channels single ended16 single ended or 8 differential inputs
Universal input 
Voltage ranges; differential and single ended
Yes* *2 wire probes (not 3 or 4 wire resistance)  
-25 to 50V, -1.5 to 2.5V
Common mode 
Current ranges, differential (requires external 10Ω shunt)
4 to 20mA, -30 to +30mA
Thermocouple ranges; differential and singleK-type -200 to 1372°C  
R-type -50 to 1768°C  
B-type 250 to 1820°C  
T-type -200 to 400°C  
S-type -50 to 1768°C  
C-type 0 to 2320°C  
N-type -200 to 1300°C  
J-type -200 to 1200°C  
D-type 0 to 2320°C
Resistance ranges, all 2 wire0 to 300,000Ω
Thermistor ranges          
Pt100/1000, 2-wire
U, UU, Y & S – type – 50 to +150°C & customer specific thermistors  
-200 to 850°C
Internal reference temperature-55 to 150°C
Pulse count ranges          
Digital state/event ranges
0 to 100Hz (2 input) 0 to 64kHz (2 input)          
0 to 34,360,000,000 count  
8 state inputs or 1 x 8 bit binary
Digital/alarm outputs4 open drain FETs, 40V, 0.1A
A/D resolution32 bit
Accuracy0.1% of range + 0.1% of reading
Clock resolution/accuracy1s/10ppm
Sampling rates1, 2 4 or 8 readings per second
Data statisticsYes from within new SquirrelView plus PC software
Calculated channelsYes, up to 16
Memory internal4GB, approximately 200 million readings
Multi function buttonLED Status indication and start/stop
Internal battery6 x AA cells
Battery life          
External power
up to 6 months all channels logging every 15 minutes  
Yes, 8 to 38v dc or via USB
Sensor power output8-38V at 150mA when connected to external power supply
NetworkingVia USB or open thread
Modem supportVia USB hub
Actions & triggers PC setup          
Front panel setup
Four alarm outputs, fully configurable actions and triggers  
Yes, SquirrelView compatible  
Via smartphone app. All essential functionality available via app e.g. channel configuration, start/stop logging etc. Other advanced functions e.g. calculated channels and channel descriptions are available via connection to a PC running SquirrelView
Stored setups6
Operating temperature-20 to 65°C
Dimensions (w x d x h)/ weight          
Working environment
257mm x 206mm x 57.3mm, 1.5kg  
– 30 to 65°C, RH up to 95% (non-condensing)

Related products

sq16-plus_left-angle_2 (1).jpg