SAJ + Sensibo

What Zerofy can do with SAJ and Sensibo

In practice

• Autopilot switches the air conditioner on when there’s surplus; the unit’s own setpoint logic still decides when it heats or cools.
• Zerofy gets new SAJ data every 5 minutes and adjusts accordingly. A minimum runtime and an activation threshold in Autopilot keep passing clouds from interrupting the device.
• Zerofy also shows your SAJ battery, so you can see whether surplus goes into the battery or into the air conditioner.
• The API key gives Zerofy access to your Sensibo account: keep it in place, because deleting or regenerating it at home.sensibo.com/me/api cuts the connection until you enter a new key in Zerofy.

What SAJ and Sensibo offer on their own

SAJ: The SAJ eManager has two dry-contact (DO) outputs for a heat pump, switched by tasks you set up in the app. SAJ says Elekeeper supports heat pumps and water heaters but doesn’t list compatible models.

Sensibo: The Sensibo app automates by schedules, geofencing and “Climate React” (reacting to room temperature and humidity) and added kWh and cost tracking in October 2026. Sensibo does not advertise a mode that follows PV surplus automatically; Enphase sells Sensibo controllers, but the pairing means manually matching AC use to the production shown in the Enphase app.

Zerofy connects the two: it reads SAJ production and controls your Sensibo-controlled air conditioner to match, together with your other devices in one app, with dynamic tariffs and forecast-based Smart mode.

Setting up SAJ and Sensibo in Zerofy

1. Connect SAJ

Zerofy reads your plant from the SAJ cloud: you add Zerofy as a developer in the Elekeeper app and then enter your Plant ID in Zerofy.

1. In the Elekeeper app, tap ••• and open Plant Management.
2. Under Developer/Partner, paste the Developer ID shown in Zerofy and confirm access.
3. Copy your Plant ID from Plant Management and paste it into Zerofy.

Good to know: How fresh the data is depends on how often the SAJ cloud updates. For the battery, Zerofy supports forced charging but not switching the battery mode.

Step-by-step guide for SAJ

2. Connect Sensibo

Zerofy connects to your Sensibo account with an API key; it can switch the air conditioner on and off, set the target temperature and let Autopilot run it on solar surplus or in Smart mode.

1. Set up the Sensibo device in the Sensibo app.
2. Create an API key at home.sensibo.com/me/api.
3. In Zerofy, add Sensibo and paste the API key.

Step-by-step guide for Sensibo

3. Turn on Autopilot

In Zerofy, open your Sensibo-controlled air conditioner, turn on Autopilot and choose Solar – or Smart to also use dynamic tariffs and forecasts. Set the priority, activation threshold and minimum runtime.

Dynamic tariffs

Zerofy can also run your Sensibo-controlled air conditioner on dynamic electricity prices (EPEX Spot or Nord Pool, e.g. Tibber or aWATTar) or on a fixed time-of-use tariff. Smart mode combines those prices with forecasts of your household consumption and your SAJ solar production.

Learn more about Smart Mode

About SAJ and Sensibo

SAJ – SAJ (Guangzhou Sanjing Electric) is an inverter maker from Guangzhou, China. Homes usually have the H2 hybrid inverter with B2 battery or the HS2, HS3 or AS2 all-in-one storage systems; the eManager unit and the Caro wallbox tie them together. Monitoring app: Elekeeper.

Sensibo – Sensibo was founded in Tel Aviv, Israel, in 2013. Its controllers (Sky, Air, Air PRO) make existing air conditioners, mini-splits and air-to-air heat pumps smart by sending the same infrared commands as the original remote. Products: Sensibo Sky, Sensibo Air, Sensibo Air PRO (plus Room Sensor and Elements/Pure air-quality devices).

Manufacturer information last checked: October 2026.

All devices that work with SAJ