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Sonoff SNZB-05P: Water Leak Sensor to have at home

Have you ever imagined the damage a small water leak can cause to your home? Water leaks can be silent but devastating, ruining your belongings and costing you thousands in repairs. In this article, I introduce you to the Sonoff SNZB-05P, a new economical and efficient water leak sensor that will prevent flooding problems in your home. Learn how it works, its benefits and how to easily install it to keep your home safe.

What is a Water Leak Sensor?

A water leak sensor is a device designed to detect the presence of water in places where it should not be. These sensors are placed in areas prone to leaks, such as kitchens, bathrooms and basements. When the sensor detects water by contacting its electrodes, it sends an immediate alert to our HUB, cell phone or linked alarm system, allowing us to act quickly to prevent further damage.

Sonoff SNZB-05P Water Leak Sensor Unboxing

Box Contents

The Sonoff SNZB-05P is a battery-powered Zigbee 3.0 sensor with IP67 protection against water and dust, ideal for both indoor and outdoor use. In the box you will find the sensor, the instruction manual, mounting accessories and a very important additional accessory that we will detail later, but it is an addition that will give this sensor some very interesting features.

Physical Characteristics and Mounting of the Sonoff SNZB-05P

The Sonoff SNZB-05P stands out for its good finish and manufacturing quality. It is compact and comes in white. The upper part houses the battery compartment and the pairing and reset button. In the lower part, the detection electrodes are responsible for sending alerts when they detect water. Please note that for proper installation, the electrodes should always point downwards.

Sonoff SNZB-05P Water Leak Sensor Bonding and Operation

Matching Process

Pairing the Sonoff SNZB-05P is quite simple. Being a Zigbee 3.0 device, it can be paired with any Sonoff HUB, such as the iHost or NS Panel Pro. To pair it, just hold down the reset button for about 5 seconds and scan the new device with our HUB. In a few seconds, the sensor will be identified and added.

Functional Test

To test the sensor, simply place the device in the correct position. Add water until it touches the electrodes. You will immediately receive a flood alert on the device you have previously linked, in my case it has been the NS Panel Pro. By removing the sensor and removing the contact with the water, the alert will cease, demonstrating its immediate efficiency in detecting water leaks.

Sonoff SNZB-05P Water Leak Sensor Cable Detection Accessory

As I mentioned before, this sensor has a very interesting accessory. It is a 2 meter cable that also acts as a water detector. Made of an absorbent nylon, it sends leak detection signals immediately upon contact with water. Thanks to its USB-C male and female connectors you can connect several cables and sensors together, creating a wide detection area.

Sensor de Fugas de Agua Sonoff SNZB-05P

Benefits of Owning the Sonoff SNZB-05P Water Leak Sensor

  • Costly Damage Prevention

A water leak sensor can prevent costly property damage, saving you thousands of euros in repairs by detecting a leak in time.

  • Peace of mind

Knowing that you are protected against potential leaks allows you to live more peacefully and enjoy your home without worries.

Sonoff SNZB-05P Water Leakage Sensor Pricing

Purchase Options

The Sonoff SNZB-05P is available in two purchase options through the official Sonoff website.

As you can see, both options are quite economical, but the second one offers a wider range of applications for only 6 dollars more. Add to this that if you use our discount code for staying this far you can get it even cheaper.

Review of the Sonoff SNZB-05P

Apart from all this content and explanations that I have left you in this article, you can also go much deeper and see the detailed operation of this equipment in the Full Review that I have left you on my Youtube Channel. Remember to subscribe and turn on the notifications campaign so you don’t miss any of the content I publish over there.

Sonoff SNZB-05P Youtube Review


Water leak sensors are an essential tool for any modern home. They protect your property, save money on repairs and provide peace of mind. The Sonoff SNZB-05P is an efficient, functional and economical option for home automation and security. Did you like this device? Leave us your questions and opinions in the comments. Thanks for reading to the end. If you liked it, give it a like and share this article with everyone you know. Don’t forget to follow me on my social networks, especially on Instagram for more content about Domotics and home automation!