Senztek SolaSmart 20m Roof Sensor with female plug
Solar Hot Water Parts roof sensors come with heat transfer paste and joiners.
The image of the solar hot water controller in the description has been included to assist you find the correct sensor for your system (controller is not included in sale price).

Who are Senztek?
Senztek is a local based New Zealand electronics designer and manufacturer that has had a huge impact on the Australian solar hot water market. Their quality range of solar hot water controllers has been purposely built to suit our climate. They supply a large number of leading manufacturers globally - Apricus; AAE; Bosch; Edson; Hills; Neopower; Rotex; SolarArk; Stratco; SolarOz; Solarland; Thermotec; Zen - just to name a few.
Their smart energy controllers include the SolaStat; SolaStat Plus; SolaStat ST; SolaStat WR; AlphaStat; EcoStat; SolaStat-Pool and the new SolaSmart range. Senztek has spent many years developing and perfecting advanced algorithms and associated controllers able to deliver real savings for solar and electric hot water users.
Solar Hot Water Parts is an approved Senztek distributor of the complete Senztek SolaStat range. We are continually extending our solar hot water spare parts catalogue to give you the best selection of solar hot water replacement parts to choose from.
We sell the widest range of spare parts to suit any solar hot water service, whether it be a flat plate panel or evacuated tube solar collector. The Solar Hot Water Parts range is now online and ready to order, with complete tech specs to ensure your seamless selection.
If you're unsure which part suits, simply contact us - click here
Which Senztek controller do you have?
Senztek made several controller families, and the sensor you need depends on which one is fitted to your system. Check the badge on the front of the controller:
- SolaStat / SolaStat-Plus — the most common solar circulation controllers, with a digital display. Available as 1-2 sensor, 1-3 sensor and 2-3 sensor versions.
- SolaStat ST Plus — fitted to Apricus and several rebadged systems. Available as 1-2 sensor and 1-3 sensor versions.
- SolaSmart / SolaSmart Plus — the later range, some fitted with a separate touch display. Available as the standard SolaSmart Plus, and in Edson and SolarArk versions.
- SolaSmart Lite — used by Heavenly Solar and Solar Ark. Now discontinued.
- AlphaStat-Plus — controls the electric booster element rather than solar circulation. View the AlphaStat-Plus.
The numbers in the model name are how many sensors the controller uses: a 1-2 runs two sensors (roof and tank), a 1-3 runs three, and a 2-3 will work with either.
Not sure which you have? Email sales@solarhotwaterparts.com.au a photo of the front of your controller and of the plug on the old sensor, and we will confirm exactly which sensor you need.