Apogee Instruments SQ-647-SS Owner's Manual - Page 5
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SENSOR MODELS
This manual covers the unamplified model SQ-640 Quantum Light Pollution Sensor (in bold below). Additional
models are covered in their respective manuals.
Model
Signal
SQ-640
Self-powered
SQ-642
0-2.5 V
SQ-644
4-20 mA
SQ-645
0-5 V
SQ-646
USB
SQ-647
SDI-12
SQ-648
Modbus
A sensor's model number and serial number are
located on the bottom of the sensor. If the
manufacturing date of a specific sensor is
required, please contact Apogee Instruments
with the serial number of the sensor.