---
product_id: 21724811
title: "Dual TDS Meter Senno"
brand: "senno"
price: "R1245"
currency: ZAR
in_stock: true
reviews_count: 3
url: https://www.desertcart.co.za/products/21724811-dual-tds-meter-senno
store_origin: ZA
region: South Africa
---

# Dual TDS Meter Senno

**Brand:** senno
**Price:** R1245
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Dual TDS Meter Senno by senno
- **How much does it cost?** R1245 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/21724811-dual-tds-meter-senno)

## Best For

- senno enthusiasts

## Why This Product

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

## Description

Dual in line TDS Meter with tee quick connect fittings. Detection range is 0-999 ppm, sensitivity is 1 ppm, accuracy is + - 2%. Just push a button to get each reading.  This dual in-lin-TDS Meter comes with two tee quick connect fittings. Detection range is 0-999 ppm, sensitivity is 1 ppm, accuracy is + - 2%. Over 80% removal rate the indicator shows green flash, less than 80% show red flash. Installation and Operation: Select 2 points in water system for installing the inlet / outlet tee connectors. Just cut the 1/4 tubing and reconnect tubing with the tee provided. Press button to measure the TDS values of both inlet and outlet water. To repeat measurement press again. Reef keepers should select post membrane (pure) as inlet and post DI as outlet. Residential users should use tap water (inlet) and post membrane (pure) as outlet. Systems should be running and making water for a few minutes before testing. This meter does not have a back light screen.

## Images

![Dual TDS Meter Senno - Image 1](https://m.media-amazon.com/images/I/41m9RvOr6kL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works great
  

*by B***K on Reviewed in the United States on November 1, 2011*

Very easy to install and is working fine. Arrived sooner than than they said.  I have two of them at two different house and they are right on the money.

### ⭐⭐ 2.0 out of 5 stars







  
  
    Cool idea, older model?
  

*by H***R on Reviewed in the United States on April 16, 2012*

I received this unit last week.  Shipping via USPS didn't take very long from their location.  It arrived here safe and in working order.  Or so I thought.  LOLAfter reading the instructions, which I rarely do, I noticed it says there is a light that comes on inside the unit.  It also mentions a power plug in the unit.  While it doesn't say Voltage, A/C or D/C on the instructions, elsewhere I've read from the manufacturer it will run off 24v booster pump power supplies.  These power supplies are A/C.I tried tinkering with it and connecting a lower voltage DC power supply to the unit to see if I can get anything to work.  I have built many circuits and I understand what is the ground plane and what is VCC or positive terminals.  I can only assume this unit is CMOS and very static sensitive because my experiment rendered the unit worthless.  I should have known better when the Manufacturer offers such little information. I.E. Like what power supply or even some indication on how to power it in an always on mode. (Which SennoTech states the unit can do).  It is a wonderful idea and the only manufacturer that offers this type of configuration.When the unit is hooked up to the unknown power source, it disables the auto-off for the unit and enables another one for the light.  When you press the power/reset button, the light would come on for a short time and then go off.  The LCD display should remain on.  I have only read this, not experienced this functionality.The ABS plastic on the unit is very flimsy and totally in the 'light use, consumer' bracket.  After closer inspection, this particular unit didn't have a light in it at all.  The manual indicates it has a power 'Jack'.  This jack consists of two predrilled holes on the PC board.  I don't know how manufactures can release incomplete products like this.DISCLAIMER: This review is no reflection on the seller.  The seller did his job and a very good one at that.  SennoTech should not be distributing products that don't have instructions on functionality on the product.  The current state of the unit I purchased is completely my fault.It gets 2 stars due to documentation.  If you don't want the always on, power supply feature, this unit deserves 5 stars.. It works great on battery except my unit didn't have a light as shown in the picture above.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Five Stars
  

*by W***R on Reviewed in the United States on January 11, 2016*

well worth the dollars

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**Shop now:** [https://www.desertcart.co.za/products/21724811-dual-tds-meter-senno](https://www.desertcart.co.za/products/21724811-dual-tds-meter-senno)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-02*