The Sonoff SNZB-05P sensor is a Zigbee water leak and flood detection sensor that uses the Zigbee 3.0 protocol to send notifications and activate scenes via a Zigbee 3.0 gateway. Its small size makes it easy to install in areas close to boilers, radiators, washing machines, and dishwashers, as well as other areas at risk of leaks. The sensor detects water in small amounts, even as little as 0.5 mm, and is designed to operate on metal surfaces without false alarms. It can be placed in two positions, detecting water on the ground or droplets when oriented upwards.
The SONOFF SNZB-05P detects leaks in real-time and sends instant notifications via the eWeLink app. Even in case of Wi-Fi interruption, local Zigbee scenes can trigger audible alarms on compatible Zigbee gateways. It also supports notifications via email and SMS by activating specific subscription plans. Multiple notifications allow you to act quickly to prevent damage. The sensor sends alerts every ten minutes during water leak incidents.
It communicates through an eWeLink Zigbee gateway, such as the Sonoff Zigbee Bridge Pro, transmitting data to the eWeLink cloud and can control other Sonoff or SmartWise devices. It is compatible with SONOFF NSPanel Pro, SONOFF iHost, SONOFF ZB Bridge, and other Zigbee 3.0 platforms. Zigbee sensors require a Zigbee gateway to connect to your home network.
The sensor can be used with a water leak detection cable, aimed at monitoring areas such as basements and laundry rooms. It is powered by a CR2477 battery that provides over 5 years of use and has an IP67 rating for protection against water and dust. It is made with gold-plated contacts for increased corrosion resistance and from UV-resistant materials.
Protocol: Zigbee 3.0
Power Supply: 1 x CR2477 (not included)
Battery Life: up to 5 years
Durability: IP67
SONOFF SNZB-05P Sensor
The SONOFF SNZB-05P sensor is an advanced water leak and flood detection solution based on the Zigbee 3.0 protocol. Its extremely small size allows for easy placement on floors near boilers, radiators, washing machines, and dishwashers, protecting against pipe breaks and leaks. The device detects water levels as low as 0.5 mm and features a special hollow design that allows it to operate in two positions: with the front facing down for water on the ground and with the front facing up for detecting drops.
Battery powered
The device is powered by a CR2477 battery, which offers an impressive lifespan of over 5 years, eliminating the need for frequent replacements. With IP67 certification, the SNZB-05P is fully protected against dust and withstands short-term immersion in water, ensuring reliable operation in wet and dusty environments. Installation is plug-and-play, as it is simply placed at the point of interest without the need for wiring.
eWeLink Ecosystem
Security is enhanced through the eWeLink ecosystem, where the sensor sends instant notifications to your smartphone. In the event of a leak, notifications are repeated every ten minutes to ensure they are not missed due to network fluctuations. Even if Wi-Fi fails, local Zigbee scenes can trigger audible alarms on compatible gateways, while notifications via email or SMS are also supported (with advanced subscription), allowing immediate action to be taken against mold and material damage.
Zigbee 3.0 Protocol
The Zigbee 3.0 protocol offers low power consumption and minimal latency, making the SNZB-05P extremely efficient. It is compatible with Sonoff gateways (such as the Zigbee Bridge Ultra, iHost, NSPanel Pro), as well as third-party gateways like the Aeotec SmartThings hub v3. Additionally, it can be easily integrated into Home Assistant via ZHA or Zigbee2MQTT, providing complete flexibility in controlling other Wi-Fi or RF devices based on leak notifications.
Water detection cable
An important advantage of the set is the 2-meter water detection cable, which allows monitoring of wider areas or hard-to-reach spots under sinks and in basements. Extension cables can be connected in series without limitation on total length, offering customized protection. The sensor features gold-plated pins for corrosion resistance and is made from UV-resistant materials, preventing discoloration over time.
Features
Zigbee 3.0 protocol (compatible gateway required)
Water detection from 0.5 mm
Battery life up to 5 years (CR2477)
IP67 certification for water and dust protection
2-meter detection cable (included in the set)
Push notifications (app), email, and SMS (via subscription)
Compatible with Home Assistant, SmartThings, and Sonoff gateways
Gold-plated anti-corrosion pins
Dual-position operation (floor and drip detection)
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.
I got 3 pieces of Sonoff SNZB-05P and now I feel like my house is more fortified than a submarine! We're talking about the ultimate flood sensor, especially with this 2-meter cable that makes everything easier. I threw it in the tightest spots behind washing machines and under sinks, places where other sensors just can't reach, and I finally relaxed.
Of course, the real deal is in the setup. I hooked them up to Home Assistant via Zigbee right away and things got professional:
NASA-level automations: I didn't just settle for a simple notification. I set up such a scene in HA that, if the sensor even senses a hint of moisture, the house goes into alarm mode, the lights turn red, and I get notifications everywhere until I shut off the valve.
Zigbee Reliability: We're talking about instant response. Before a drop even touches the floor, HA has already "picked up" the signal.
Practicality: With the 3 pieces, I covered all the dangerous spots. It's that sweet certainty that even if a pipe bursts while I'm away, I'll know in the first few seconds.
It's by far the best investment I've made lately for my smart home. If you don't have Sonoff with a cable on HA, you're just waiting for the flood to knock on your door!
Πήρα 3 τεμάχια Sonoff SNZB-05P και πλέον νιώθω ότι το σπίτι μου είναι πιο οχυρωμένο και από υποβρύχιο! Μιλάμε για τον απόλυτο αισθητήρα πλημμύρας, ειδικά με αυτό το καλώδιο των 2 μέτρων που σου λύνει τα χέρια. Το πέταξα στα πιο στριμωγμένα σημεία πίσω από πλυντήρια και κάτω από νεροχύτες, εκεί που άλλοι αισθητήρες απλά δεν φτάνουν, και ηρέμησα.
Φυσικά, το "ζουμί" είναι στο setup. Τα κούμπωσα αμέσως στο Home Assistant μέσω Zigbee και η φάση έγινε επαγγελματική:
Αυτοματισμοί επιπέδου NASA: Δεν έμεινα μόνο στο να χτυπάει ένα απλό notification. Έστησα τέτοιο σκηνικό στο HA που, αν ο αισθητήρας νιώσει έστω και υποψία υγρασίας, το σπίτι βαράει συναγερμό, τα φώτα γίνονται κόκκινα και με κυνηγάνε ειδοποιήσεις παντού μέχρι να κλείσω τη βάνα.
Zigbee Reliability: Μιλάμε για ακαριαία απόκριση. Πριν προλάβει η σταγόνα να ακουμπήσει πάτωμα, το HA έχει ήδη "σκουπώσει" το σήμα.
Practicality: Με τα 3 τεμάχια κάλυψα όλα τα επικίνδυνα σημεία. Είναι αυτή η γλυκιά σιγουριά ότι ακόμα και αν σκάσει σωλήνας ενώ λείπω, θα το μάθω στα πρώτα δευτερόλεπτα.
Είναι με διαφορά η καλύτερη επένδυση που έχω κάνει τελευταία για το smart home μου. Αν δεν έχεις Sonoff με καλώδιο στο HA, απλά περιμένεις την πλημμύρα να σου χτυπήσει την πόρτα!
It works perfectly with a battery, detection is instantaneous. I don't know what role the cable plays or what changes since the power supply is via battery. The connection with the ZBBridge hub is super easy. The build quality is very good, better than any Sonoff I have, however I think the price is a bit high, especially if someone needs at least 2-3 for a house!
Λειτουργεί άψογα με μπαταρία, η ανίχνευση είναι ακαριαία. Το καλώδιο δεν ξέρω που παίζει ρόλο και τι αλλάζει αφού η τροφοδοσία γίνεται με μπαταρία. Η σύνδεση γίνεται με γέφυρα ZBBridge πανεύκολα. Η ποιότητα κατασκευής είναι πάρα πολύ καλή, καλύτερη από οτιδήποτε Sonoff έχω, ωστόσο νομίζω η τιμή είναι λίγο τσιμπημένη, ειδικά αν χρειάζεται κάποιος τουλάχιστον 2-3 για ένα σπίτι!
I got 3 pieces of Sonoff SNZB-05P and now I feel like my house is more fortified than a submarine! We're talking about the ultimate flood sensor, especially with this 2-meter cable that makes everything easier. I threw it in the tightest spots behind washing machines and under sinks, places where other sensors just can't reach, and I finally relaxed.
Of course, the real deal is in the setup. I hooked them up to Home Assistant via Zigbee right away and things got professional:
NASA-level automations: I didn't just settle for a simple notification. I set up such a scene in HA that, if the sensor even senses a hint of moisture, the house goes into alarm mode, the lights turn red, and I get notifications everywhere until I shut off the valve.
Zigbee Reliability: We're talking about instant response. Before a drop even touches the floor, HA has already "picked up" the signal.
Practicality: With the 3 pieces, I covered all the dangerous spots. It's that sweet certainty that even if a pipe bursts while I'm away, I'll know in the first few seconds.
It's by far the best investment I've made lately for my smart home. If you don't have Sonoff with a cable on HA, you're just waiting for the flood to knock on your door!
Πήρα 3 τεμάχια Sonoff SNZB-05P και πλέον νιώθω ότι το σπίτι μου είναι πιο οχυρωμένο και από υποβρύχιο! Μιλάμε για τον απόλυτο αισθητήρα πλημμύρας, ειδικά με αυτό το καλώδιο των 2 μέτρων που σου λύνει τα χέρια. Το πέταξα στα πιο στριμωγμένα σημεία πίσω από πλυντήρια και κάτω από νεροχύτες, εκεί που άλλοι αισθητήρες απλά δεν φτάνουν, και ηρέμησα.
Φυσικά, το "ζουμί" είναι στο setup. Τα κούμπωσα αμέσως στο Home Assistant μέσω Zigbee και η φάση έγινε επαγγελματική:
Αυτοματισμοί επιπέδου NASA: Δεν έμεινα μόνο στο να χτυπάει ένα απλό notification. Έστησα τέτοιο σκηνικό στο HA που, αν ο αισθητήρας νιώσει έστω και υποψία υγρασίας, το σπίτι βαράει συναγερμό, τα φώτα γίνονται κόκκινα και με κυνηγάνε ειδοποιήσεις παντού μέχρι να κλείσω τη βάνα.
Zigbee Reliability: Μιλάμε για ακαριαία απόκριση. Πριν προλάβει η σταγόνα να ακουμπήσει πάτωμα, το HA έχει ήδη "σκουπώσει" το σήμα.
Practicality: Με τα 3 τεμάχια κάλυψα όλα τα επικίνδυνα σημεία. Είναι αυτή η γλυκιά σιγουριά ότι ακόμα και αν σκάσει σωλήνας ενώ λείπω, θα το μάθω στα πρώτα δευτερόλεπτα.
Είναι με διαφορά η καλύτερη επένδυση που έχω κάνει τελευταία για το smart home μου. Αν δεν έχεις Sonoff με καλώδιο στο HA, απλά περιμένεις την πλημμύρα να σου χτυπήσει την πόρτα!
It works perfectly with a battery, detection is instantaneous. I don't know what role the cable plays or what changes since the power supply is via battery. The connection with the ZBBridge hub is super easy. The build quality is very good, better than any Sonoff I have, however I think the price is a bit high, especially if someone needs at least 2-3 for a house!
Λειτουργεί άψογα με μπαταρία, η ανίχνευση είναι ακαριαία. Το καλώδιο δεν ξέρω που παίζει ρόλο και τι αλλάζει αφού η τροφοδοσία γίνεται με μπαταρία. Η σύνδεση γίνεται με γέφυρα ZBBridge πανεύκολα. Η ποιότητα κατασκευής είναι πάρα πολύ καλή, καλύτερη από οτιδήποτε Sonoff έχω, ωστόσο νομίζω η τιμή είναι λίγο τσιμπημένη, ειδικά αν χρειάζεται κάποιος τουλάχιστον 2-3 για ένα σπίτι!
The Sonoff SNZB-05P sensor is a Zigbee water leak and flood detection sensor that uses the Zigbee 3.0 protocol to send notifications and activate scenes via a Zigbee 3.0 gateway. Its small size makes it easy to install in areas close to boilers, radiators, washing machines, and dishwashers, as well as other areas at risk of leaks. The sensor detects water in small amounts, even as little as 0.5 mm, and is designed to operate on metal surfaces without false alarms. It can be placed in two positions, detecting water on the ground or droplets when oriented upwards.
The SONOFF SNZB-05P detects leaks in real-time and sends instant notifications via the eWeLink app. Even in case of Wi-Fi interruption, local Zigbee scenes can trigger audible alarms on compatible Zigbee gateways. It also supports notifications via email and SMS by activating specific subscription plans. Multiple notifications allow you to act quickly to prevent damage. The sensor sends alerts every ten minutes during water leak incidents.
It communicates through an eWeLink Zigbee gateway, such as the Sonoff Zigbee Bridge Pro, transmitting data to the eWeLink cloud and can control other Sonoff or SmartWise devices. It is compatible with SONOFF NSPanel Pro, SONOFF iHost, SONOFF ZB Bridge, and other Zigbee 3.0 platforms. Zigbee sensors require a Zigbee gateway to connect to your home network.
The sensor can be used with a water leak detection cable, aimed at monitoring areas such as basements and laundry rooms. It is powered by a CR2477 battery that provides over 5 years of use and has an IP67 rating for protection against water and dust. It is made with gold-plated contacts for increased corrosion resistance and from UV-resistant materials.
Protocol: Zigbee 3.0
Power Supply: 1 x CR2477 (not included)
Battery Life: up to 5 years
Durability: IP67
SONOFF SNZB-05P Sensor
The SONOFF SNZB-05P sensor is an advanced water leak and flood detection solution based on the Zigbee 3.0 protocol. Its extremely small size allows for easy placement on floors near boilers, radiators, washing machines, and dishwashers, protecting against pipe breaks and leaks. The device detects water levels as low as 0.5 mm and features a special hollow design that allows it to operate in two positions: with the front facing down for water on the ground and with the front facing up for detecting drops.
Battery powered
The device is powered by a CR2477 battery, which offers an impressive lifespan of over 5 years, eliminating the need for frequent replacements. With IP67 certification, the SNZB-05P is fully protected against dust and withstands short-term immersion in water, ensuring reliable operation in wet and dusty environments. Installation is plug-and-play, as it is simply placed at the point of interest without the need for wiring.
eWeLink Ecosystem
Security is enhanced through the eWeLink ecosystem, where the sensor sends instant notifications to your smartphone. In the event of a leak, notifications are repeated every ten minutes to ensure they are not missed due to network fluctuations. Even if Wi-Fi fails, local Zigbee scenes can trigger audible alarms on compatible gateways, while notifications via email or SMS are also supported (with advanced subscription), allowing immediate action to be taken against mold and material damage.
Zigbee 3.0 Protocol
The Zigbee 3.0 protocol offers low power consumption and minimal latency, making the SNZB-05P extremely efficient. It is compatible with Sonoff gateways (such as the Zigbee Bridge Ultra, iHost, NSPanel Pro), as well as third-party gateways like the Aeotec SmartThings hub v3. Additionally, it can be easily integrated into Home Assistant via ZHA or Zigbee2MQTT, providing complete flexibility in controlling other Wi-Fi or RF devices based on leak notifications.
Water detection cable
An important advantage of the set is the 2-meter water detection cable, which allows monitoring of wider areas or hard-to-reach spots under sinks and in basements. Extension cables can be connected in series without limitation on total length, offering customized protection. The sensor features gold-plated pins for corrosion resistance and is made from UV-resistant materials, preventing discoloration over time.
Features
Zigbee 3.0 protocol (compatible gateway required)
Water detection from 0.5 mm
Battery life up to 5 years (CR2477)
IP67 certification for water and dust protection
2-meter detection cable (included in the set)
Push notifications (app), email, and SMS (via subscription)
Compatible with Home Assistant, SmartThings, and Sonoff gateways
Gold-plated anti-corrosion pins
Dual-position operation (floor and drip detection)
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.
I got 3 pieces of Sonoff SNZB-05P and now I feel like my house is more fortified than a submarine! We're talking about the ultimate flood sensor, especially with this 2-meter cable that makes everything easier. I threw it in the tightest spots behind washing machines and under sinks, places where other sensors just can't reach, and I finally relaxed.
Of course, the real deal is in the setup. I hooked them up to Home Assistant via Zigbee right away and things got professional:
NASA-level automations: I didn't just settle for a simple notification. I set up such a scene in HA that, if the sensor even senses a hint of moisture, the house goes into alarm mode, the lights turn red, and I get notifications everywhere until I shut off the valve.
Zigbee Reliability: We're talking about instant response. Before a drop even touches the floor, HA has already "picked up" the signal.
Practicality: With the 3 pieces, I covered all the dangerous spots. It's that sweet certainty that even if a pipe bursts while I'm away, I'll know in the first few seconds.
It's by far the best investment I've made lately for my smart home. If you don't have Sonoff with a cable on HA, you're just waiting for the flood to knock on your door!
Πήρα 3 τεμάχια Sonoff SNZB-05P και πλέον νιώθω ότι το σπίτι μου είναι πιο οχυρωμένο και από υποβρύχιο! Μιλάμε για τον απόλυτο αισθητήρα πλημμύρας, ειδικά με αυτό το καλώδιο των 2 μέτρων που σου λύνει τα χέρια. Το πέταξα στα πιο στριμωγμένα σημεία πίσω από πλυντήρια και κάτω από νεροχύτες, εκεί που άλλοι αισθητήρες απλά δεν φτάνουν, και ηρέμησα.
Φυσικά, το "ζουμί" είναι στο setup. Τα κούμπωσα αμέσως στο Home Assistant μέσω Zigbee και η φάση έγινε επαγγελματική:
Αυτοματισμοί επιπέδου NASA: Δεν έμεινα μόνο στο να χτυπάει ένα απλό notification. Έστησα τέτοιο σκηνικό στο HA που, αν ο αισθητήρας νιώσει έστω και υποψία υγρασίας, το σπίτι βαράει συναγερμό, τα φώτα γίνονται κόκκινα και με κυνηγάνε ειδοποιήσεις παντού μέχρι να κλείσω τη βάνα.
Zigbee Reliability: Μιλάμε για ακαριαία απόκριση. Πριν προλάβει η σταγόνα να ακουμπήσει πάτωμα, το HA έχει ήδη "σκουπώσει" το σήμα.
Practicality: Με τα 3 τεμάχια κάλυψα όλα τα επικίνδυνα σημεία. Είναι αυτή η γλυκιά σιγουριά ότι ακόμα και αν σκάσει σωλήνας ενώ λείπω, θα το μάθω στα πρώτα δευτερόλεπτα.
Είναι με διαφορά η καλύτερη επένδυση που έχω κάνει τελευταία για το smart home μου. Αν δεν έχεις Sonoff με καλώδιο στο HA, απλά περιμένεις την πλημμύρα να σου χτυπήσει την πόρτα!
It works perfectly with a battery, detection is instantaneous. I don't know what role the cable plays or what changes since the power supply is via battery. The connection with the ZBBridge hub is super easy. The build quality is very good, better than any Sonoff I have, however I think the price is a bit high, especially if someone needs at least 2-3 for a house!
Λειτουργεί άψογα με μπαταρία, η ανίχνευση είναι ακαριαία. Το καλώδιο δεν ξέρω που παίζει ρόλο και τι αλλάζει αφού η τροφοδοσία γίνεται με μπαταρία. Η σύνδεση γίνεται με γέφυρα ZBBridge πανεύκολα. Η ποιότητα κατασκευής είναι πάρα πολύ καλή, καλύτερη από οτιδήποτε Sonoff έχω, ωστόσο νομίζω η τιμή είναι λίγο τσιμπημένη, ειδικά αν χρειάζεται κάποιος τουλάχιστον 2-3 για ένα σπίτι!
I got 3 pieces of Sonoff SNZB-05P and now I feel like my house is more fortified than a submarine! We're talking about the ultimate flood sensor, especially with this 2-meter cable that makes everything easier. I threw it in the tightest spots behind washing machines and under sinks, places where other sensors just can't reach, and I finally relaxed.
Of course, the real deal is in the setup. I hooked them up to Home Assistant via Zigbee right away and things got professional:
NASA-level automations: I didn't just settle for a simple notification. I set up such a scene in HA that, if the sensor even senses a hint of moisture, the house goes into alarm mode, the lights turn red, and I get notifications everywhere until I shut off the valve.
Zigbee Reliability: We're talking about instant response. Before a drop even touches the floor, HA has already "picked up" the signal.
Practicality: With the 3 pieces, I covered all the dangerous spots. It's that sweet certainty that even if a pipe bursts while I'm away, I'll know in the first few seconds.
It's by far the best investment I've made lately for my smart home. If you don't have Sonoff with a cable on HA, you're just waiting for the flood to knock on your door!
Πήρα 3 τεμάχια Sonoff SNZB-05P και πλέον νιώθω ότι το σπίτι μου είναι πιο οχυρωμένο και από υποβρύχιο! Μιλάμε για τον απόλυτο αισθητήρα πλημμύρας, ειδικά με αυτό το καλώδιο των 2 μέτρων που σου λύνει τα χέρια. Το πέταξα στα πιο στριμωγμένα σημεία πίσω από πλυντήρια και κάτω από νεροχύτες, εκεί που άλλοι αισθητήρες απλά δεν φτάνουν, και ηρέμησα.
Φυσικά, το "ζουμί" είναι στο setup. Τα κούμπωσα αμέσως στο Home Assistant μέσω Zigbee και η φάση έγινε επαγγελματική:
Αυτοματισμοί επιπέδου NASA: Δεν έμεινα μόνο στο να χτυπάει ένα απλό notification. Έστησα τέτοιο σκηνικό στο HA που, αν ο αισθητήρας νιώσει έστω και υποψία υγρασίας, το σπίτι βαράει συναγερμό, τα φώτα γίνονται κόκκινα και με κυνηγάνε ειδοποιήσεις παντού μέχρι να κλείσω τη βάνα.
Zigbee Reliability: Μιλάμε για ακαριαία απόκριση. Πριν προλάβει η σταγόνα να ακουμπήσει πάτωμα, το HA έχει ήδη "σκουπώσει" το σήμα.
Practicality: Με τα 3 τεμάχια κάλυψα όλα τα επικίνδυνα σημεία. Είναι αυτή η γλυκιά σιγουριά ότι ακόμα και αν σκάσει σωλήνας ενώ λείπω, θα το μάθω στα πρώτα δευτερόλεπτα.
Είναι με διαφορά η καλύτερη επένδυση που έχω κάνει τελευταία για το smart home μου. Αν δεν έχεις Sonoff με καλώδιο στο HA, απλά περιμένεις την πλημμύρα να σου χτυπήσει την πόρτα!
It works perfectly with a battery, detection is instantaneous. I don't know what role the cable plays or what changes since the power supply is via battery. The connection with the ZBBridge hub is super easy. The build quality is very good, better than any Sonoff I have, however I think the price is a bit high, especially if someone needs at least 2-3 for a house!
Λειτουργεί άψογα με μπαταρία, η ανίχνευση είναι ακαριαία. Το καλώδιο δεν ξέρω που παίζει ρόλο και τι αλλάζει αφού η τροφοδοσία γίνεται με μπαταρία. Η σύνδεση γίνεται με γέφυρα ZBBridge πανεύκολα. Η ποιότητα κατασκευής είναι πάρα πολύ καλή, καλύτερη από οτιδήποτε Sonoff έχω, ωστόσο νομίζω η τιμή είναι λίγο τσιμπημένη, ειδικά αν χρειάζεται κάποιος τουλάχιστον 2-3 για ένα σπίτι!
