ANC
Well-Known Member
Depends I guess but they would likely be the ones that work with LEDs and they will be waterproof too. (at least the probe part). Maybe google PAR meter rental?
an example
http://growgreenmi.com/rent-a-sun-system-par-meter-w-remote-sensor-weekly-rental-rate
Rent a Sun System PAR Meter w/ Remote Sensor - Weekly Rental Rate
growgreenmi.com/rent-a-sun-system-par-meter-w-remote-sensor-weekly-rental-rate
Rent a Sun System PAR Meter w/ Remote Sensor for only $70/week or $200/month PLUS a $250 deposit. Sun System PAR Meter comes with an integrated sensor to measure photosynthetic active radiation (PAR). Use inside with Sun System grow ligh.
an example
http://growgreenmi.com/rent-a-sun-system-par-meter-w-remote-sensor-weekly-rental-rate
Rent a Sun System PAR Meter w/ Remote Sensor - Weekly Rental Rate
growgreenmi.com/rent-a-sun-system-par-meter-w-remote-sensor-weekly-rental-rate
Rent a Sun System PAR Meter w/ Remote Sensor for only $70/week or $200/month PLUS a $250 deposit. Sun System PAR Meter comes with an integrated sensor to measure photosynthetic active radiation (PAR). Use inside with Sun System grow ligh.