Don’t be tempted to buy the Hydrofarm one cuz they’re cheaper, they have heaps of quality issues, and you’ll find that if you search reviews. Wiring comes apart on the sensor and batteries stop charging. Common faults. I had one, lasted a week and luckily got a full refund.
Apogee are best quality for price, the MQ 500 is good and can be found for $1,000 - $1,500. You can get a wand for them too.
www.instrumentchoice.com.au
The Apogee MQ 500 Bundled with Telescopic Wand, Accurate for LED, Rugged, Lightweight, 4 Year Warranty: Amazon.com: Industrial & Scientific
www.amazon.com
Find many great new & used options and get the best deals for Apogee MQ-500 Full Spectrum Quantum Par Meter at the best online prices at eBay!
www.ebay.com.au