This promotional package includes both an S2-141-SS PAR-FAR sensor with a 30 cm cable and microCache Bluetooth micro-logger at a special introductory price. When paired, these two devices are a powerful tool for monitoring photosynthetically active radiation with research-grade accuracy for optimal plant growth. The S2-141-SS PAR-FAR sensor is a unique two-channel sensor for measuring both the PAR (PPFD) and Far-red outputs of electric grow lights.
The new AT-100 microCache (µCache) micro-logger is a rugged, standalone, battery-powered device that can collect over 400,000 data points and connects your sensor to your iOS or Android device via Bluetooth using our free ApogeeConnect app. The app allows you to make real-time measurements, set custom datalogging intervals, monitor and graph daily lights integrals, assure photoperiods, download datasets, and more.
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View Real-time Data
Transmits real-time data to iOS and Android devices using the Apogee Connect app.
IP67 rated for harsh environments.
Stores over 400,000 entries, (9 months of 1-minute data) with programmable sampling and logging intervals.
High Resolution Readings
Processor features a 24 bit analog-to-digital converter.
Warranty and Support
The µCache is backed by a 4 year warranty and outstanding customer support.
MORE INFORMATION ON THE APOGEE µCache >> click here
0.01 mV per µmol m⁻² s⁻¹ (PAR); 0.02 mV per µmol m⁻² s⁻¹ (Far-Red)
Calibration Factor (reciprocal of sensitivity)
100 µmol m⁻² s⁻¹ per mV (PAR); 50 µmol m⁻² s⁻¹ per mV (Far-Red)
± 5 %
0 to 40 mV (PAR); 0 to 20 mV (Far-Red)
Less than 1 %
Less than 2 % per year
Less than 1 % (up to 4000 µmol m⁻² s⁻¹) (PAR); Less than 1 % (up to 1000 µmol m⁻² s⁻¹) (Far-Red)
Less than 1 ms
Field of View
389 to 692 nm ± 5 nm (PAR); 702 to 761 nm ± 5 (Far-Red)
Directional (Cosine) Response
± 2 % at 45˚; ± 5 % at 75˚ zenith angle
Less than 0.1 % per C
Anodized aluminum body with acrylic diffuser
-40 to 70 C; 0 to 100 % relative humidity
30.5 mm diameter, 37 mm height
Bluetooth® Low Energy (Bluetooth 4.0+)
~45 m (line-of-sight)
Data Logging Capability
Averaging Interval: 1-60 minutes; Sampling Interval: ≥ 1 second
Data Log Capacity
Over 400,000 Entries (~9 months at a 1-minute logging interval)
± 30 seconds per month at 0° C ~ 70° C
2/3 AA 3.6 Volt Lithium Battery
~1 year w/ 10-second sampling interval and an average of 5 minutes daily connected time; ~2 years w/ 60-second sampling interval and an average of 5 minutes daily connected time
-40 to 85 C
66 mm length, 50 mm width, 18 mm height
BMD-340 Contains FCC ID: 2AA9B10 IC: 12208A-10
4 years against defects in materials and workmanship