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Z-Wave Secure SES303 Temperature & Humidity Sensor Gen5


Currently out of stock, but new deliveries arrive daily and sell out fast. Order now and we'll reserve from our next batch & express ship when all items are in stock.

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Need advice? More information?

Secure SES303 is the latest addition to the stylish range of digital environmental sensors. The smart sensor from Secure provides reliable and continuous monitoring of temperature and humidity inside your home, and lets you improve the efficiency of your heating system. The Z-Wave sensor can be integrated easily into your home automation network and configured to be a part of intelligent scenes and scenarios.

It can be expanded to work with external wired NTC temperature sensor (SES 001) or pipetank temperature sensors (SES 002 / SES 003). The sensors supports configurable data reporting, and can be configured to transmit the information to an associated device in the Z-Wave network.

SES 303 comes with fixing compatible to British standard single gang wall box. As the sensor is battery powered, there's no need for external wiring and it can be installed within a matter of minutes.

Z-Wave Plus

The Secure SES 303 is Z-Wave Plus Certified. Z-Wave Plus (5th Generation Z-Wave) offers a lot of new features including increased range, extended battery life and Over The Air upgrading (OTA). Take a look at our "What is Z-Wave Plus" guide for more information

Technical Details

  • Purpose of Control: Electronic Temperature and Humidity Sensor (Independently Mounted)
  • RF frequency: 868.42MHz (Z-Wave technology)
  • Software Class: Class A
  • Battery operated device: Uses two AA 1.5V batteries (Do not use rechargeable batteries)
  • Nominal Life: 2 years (with onboard & 4 wired temp sensors with the default configuration). For 5-years battery life, delta reporting should be zero and no external sensors
  • Temperature Accuracy: ±0.5°C for 0°C to 40°C
  • Humidity Accuracy: ±3% RH for 20% RH to 80% RH
  • Ball Pressure Test Temperature: 75°C
  • Storage temperature: -20°C to 55°C
  • Operating temperature: 0°C to 40°C
  • Environmental humidity range: 0% RH to 95% RH
  • Atmospheric Range: 980 to 1035 hPa
  • Pollution Degree: Degree 2
  • Enclosure protection: IP30
  • Receiver Category: Category 3
  • Power Class: Class B
  • Case Material: Thermoplastic, flame retardant
  • Mounting: Wall mounting to fit a single gang wall box
  • Dimensions: 85x85x30 mm
  • Weight (single unit packing): 205 ± 30 g
5.00 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I bought two to monitor different zones. Working great with my USB Z-Wave recv. and Domoticz. Would like to try out the external sensor input but have nothing to monitor :) Reception very good, also excellent battery life (1 minute updates).
4 Jan 2018
Excellent Sensor
I was looking for a zwave sensor for my hot water cylinder. This ticked all the boxes and was easy to install. I would highly recommend this product.
6 Nov 2017
Robust sensor with high accuracy
I've bought these sensors for professional monitoring of buildings. Allover I see this product very positive and would recommend buying it again. The temp and humidity measurement is very accurate The case looks and feels solid Automatically sending notifications, without the need to wake-up or polling is very comfortable So far, I've not tested the extension of this sensor by other digital cable sensors. What I miss is usability in outdoor environment. This one only supports indoor from 0...40°C. Nevertheless, allover it is a 5-star recommendation
26 Apr 2016
1 year ago
Browse 2 questions Browse 2 questions and 3 answers
Why did you choose this?
Vesternet Store
To monitor and control a small domestic laundry room that has a desiccant dehumidifier installed.
Guest A. 6 Sep 2016
To monitor and control a small domestic laundry room that has a desiccant dehumidifier installed.
Guest A. 6 Sep 2016
Will this work if Vera light, ive seem reports it does not ?
James s. 18 Nov 2017

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