Low cost & compact
The GR4 Lite is simplistic yet still delivers great power savings. Our first module with integrated MPPT specifically targets small household retrofit
electrical geysers. No need to change the geyser element or existing thermostat.
The GR4 Lite uses any existing 50-150 Liter geyser as is. Power is fed to the geyser and temperature is still controlled by the set point of any standard thermostat. A simple external DB timer fully automates the operation of the GR4 Lite. The timer enables/disables Grid power on the times required by the client. When Grid is not available Solar is forced, thus enabling easy to understand setup.
Launched in January 2020, we have produced and installed more than 2000 of these units during the first year. Most of these units are installed in 100% off-grid installations.
- Top seller for 2020
- Up to 180Voc PV input (Open Circuit Voltage)
- Constant voltage MPPT engine[Wiki]
- Minimum extarnal components
- Excellent for off-grid
- Easy to override
- Excellent durability
- Low cost
|Element Size||2,3 kW|
|Grid input||220 - 240Vac, 50Hz|
|PV MPPT||Yes, 17 Amp|
|Max PV power||1,500W|
|Operating temperature||-10 - 55° Celsius|
|Display charge output||12 - 16Vdc @ 100mA|
|Safety & Protection|
|Reverse Polarity||Yes. Require external fuse|
|Over Voltage Category 1||Yes|
|Transient Category 1||3-Way 710V Surge Arester|