---
product_id: 625270267
title: "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 Po"
brand: "gain express"
price: "1925.52 DT"
currency: TND
in_stock: false
url: https://www.desertcart.tn/products/625270267-digital-ph-orp-redox-2-in-1-controller-monitor-w
store_origin: TN
region: Tunisia
---

# 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 Po

**Brand:** gain express
**Price:** 1925.52 DT
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** 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 Po by gain express
- **How much does it cost?** 1925.52 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/625270267-digital-ph-orp-redox-2-in-1-controller-monitor-w)

## Best For

- gain express enthusiasts

## Why This Product

- Trusted gain express brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

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 Po

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | GAIN EXPRESS |
| Manufacturer | Gain Express |
| Country of Origin | China |
| Model number | PH-803 |
| Item Weight | 1 kg 380 g |
| Product Dimensions | 20.32 x 25.4 x 7.62 cm; 1.38 kg |
| Item model number | PH-803 |
| Item Height | 3 Inches |
| Item Width | 10 Inches |
| Are batteries included? | No |

## Images

![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 Po - Image 1](https://m.media-amazon.com/images/I/71jkdw85UXL.jpg)
![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 Po - Image 2](https://m.media-amazon.com/images/I/71Li3zRjsKL.jpg)
![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 Po - Image 3](https://m.media-amazon.com/images/I/71rbbNFNz3L.jpg)
![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 Po - Image 4](https://m.media-amazon.com/images/I/71l4sLLdVIL.jpg)
![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 Po - Image 5](https://m.media-amazon.com/images/I/71l1CrS8S6L.jpg)

## Questions & Answers

**Q: can this device run on baterrie ?**
A: No, cannot run on batteries

**Q: buenos este equipo mide tenperatura**
A: No, solo mide PH y ORP.

**Q: It will not read any ph over 7. What can i do to fix this? I followed all the instructions and it still will not.**
A: Double check the standards - in some of the packages, we received a 7ph standard that was actually 9.3pH - we've thrown all of the included standards out because it's so unreliable.

**Q: Can it be calibrated for pH 7 and 10?**
A: It can only be calibrated at one pH setting at a time. The second plug there is for ORP. Yes, it can control at 7pH well (it uses a 4 and 7pH standards to calibrate). You can control at 10pH, but it will be at the edge of the calibration range. You'll just have to double check it's controlling as expected, but should be possible.

## Frequently Bought Together

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-01-22*