Best Pools 2020 ✔ Digital pH ORP Redox 2 in 1 Controller Monitor w/ Output Power Relay Control, Electrode Probe BNC, Water Quality Meter Online Continuous Measurement Kit, for Aquarium Hydroponics Plant Pool Spa.
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👍INSTANT MEASUREMENT- Dual measurement display shows pH value at 0.00 to 14.00pH and orp value at -1999 to 1999mV simultaneously. No need to press any button to change the measurement you wanted to observe.
👍WITH RELAY FOR OUTPUT POWER CONTROL- Plug in your own device (e.g. oxygen pump, CO2-regulator, O3 ozonizer or other pH & ORP generation devices) into the corresponding PH or ORP output power socket, you can set your desired ph or orp value in this monitor controller to trigger your devices to turn on or off.
Gain Express Hot Tubs & Supplies service was timely package came Pact well however the directions are incredibly vague if you play around with it you can get it to program but again not by the directions despite those problems it works well
Best Gain Express Hot Tubs & Supplies
Gain Express Hot Tubs & Supplies Really nice product. Can read both negative and positive orp. Perfect for setting up a sulfur denitrator reactor for a reef tank because most controllers can only control positive orp values. Well packaged and well built. Both ph and ORP probes included. Highly recommend!!
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