Marstek Smart Meter CT003

Marstek Smart Meter CT003 – smart and compact energy receiver

The Marstek CT003 is a smart meter that monitors power consumption and solar energy production in real time, via both P1 (DSMR) and IR communication with the smart meter. This data is transmitted wirelessly to energy storage systems (such as Marstek Venus, Jupiter, Saturn) so that excess solar energy is sent directly to the battery, minimising grid injection

• Wireless communication: Wi-Fi (802.11 b/g/n) and Bluetooth 5.2; optional external antenna for better reception

• Compact size: 53.7 × 52 × 25.5 mm; only 0.3 kg

• Low power consumption: less than 2 W via USB-C power supply

• Temperature range: from -20 °C to +45 °C; suitable for indoor use

• Warranty: 10 years, including automatic firmware updates via the app

Advantages:

• Smart energy control: through real-time data, the CT003 automatically sends excess PV power to the home battery – preventing feed-in to the grid

• Easy installation: plug & play via P1 or IR, without an electrician

• Widely compatible: works with Marstek systems and smart meters from Shelly, among others, thanks to universal P1/IR standard

Why choose the CT003?
Because this smart meter distributes your solar energy efficiently, reduces grid costs and works effortlessly with your existing PV battery system – simple, reliable and future-ready.