Apogee Original Quantum (PAR) Sensor
The Apogee original quantum sensors measure photosynthetically active radiation (PAR) from both natural and artificial broadband light sources for growing plants and corals.
Available in portable (handheld), packages (with AT-100 micoCache logger) and sensors with analogue, voltage, SDI-12, Modbus, USB, and 4-20mA outputs.
Features
Accessories
Case Studies
Resources
Features
Portable:
- DLI-400: Daily Light Integral and Photoperiod Meter (Sunlight Only).
- MQ-100X: Quantum integral sensor on handheld meter. (Discontinued, replaced with DLI-400)
- MQ-200X: Quantum separate sensor with handheld meter and 2m cable.
- MQ-210X: Underwater quantum separate sensor with handheld meter and 2m cable.
- MQ-301X: Line quantum meter with 10 separate sensor on 2m cable.
- MQ-303X: Line quantum meter with 3 sensors on a 2m cable.
- MQ-306X: Line quantum meter with 6 sensors on a 2m cable.
- PQ-100: PAR monitoring package with AT-100 microCache and SQ-110-SS sensor head with 30cm cable lead and connector.
- PQ-110: PAR monitoring package with AT-100 microCache and SQ-110-SS2 sensor head with 2m cable lead and connector.
Sensors: analogue:
- SQ-100-X-SS: Sun calibration quantum sensor. 5m cable length with connector.
- SQ-301X-SS: Line quantum sensor, unamplified with stainless steel cable connector and 5m cable.
Sensors: voltage:
- SQ-202X-SS: Sun calibration quantum sensor, 0-2.5V DC output. 5m cable length with connector.
- SQ-205X-SS: Sun calibration quantum sensor, 0-5.0V DC output. 5m cable length with connector.
Sensors: 4-20mA:
- SQ-204X-SS: Sun calibration quantum sensor, 4-20mA output. 5m Cable length with connector.
Sensors: SDI-12:
- SQ-421X-SS: Sun calibration quantum sensor, SDI-12 output. 5m cable length with connector.
Sensors: Modbus:
- SQ-422X-SS: Sun calibration quantum sensor, Modbus output. 5m cable length with connector.
Sensors: USB connection
- SQ-420X: USB quantum sensor, sun calibration. 4.5m lead.
Accessories
Accessories can be found on the Apogee Accessories page
Case Studies
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No case studies found
Resources
MQ-100X and MQ-200X Manual | Manuals | Download |
MQ-210X Manual | Manuals | Download |
MQ-100X Specification Sheet | Manuals | Download |
MQ-210X Specification Sheet | Manuals | Download |
MQ-301X Specification Sheet | Manuals | Download |
SQ-100X Manual | Manuals | Download |
SQ-202X and SQ-205X Manual | Manuals | Download |
SQ-204X Manual | Manuals | Download |
SQ-420X Manual | Manuals | Download |
SQ-421X Manual | Manuals | Download |
SQ-422X Manual | Manuals | Download |
Accessories

Apogee Accessories
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